Mosquitoes Can Learn To Avoid Pesticide After A Single Exposure.

 

Mosquitoes Can Learn To Avoid Pesticide After A Single Exposure.Mosquitoes can learn to avoid pesticide after a single non-lethal pesticide exposure, according to a study published Thursday in Nature, highlighting an overlooked challenge in fighting the spread of diseases and parasites like malaria, which has grown more widespread and severe due to Covid-19 healthcare disruptions.

 Researchers studied two mosquito species that are common in tropical and subtropical areas around the world: Culex quinquefasciastus—which spreads avian malaria, Zika virus and West Nile virus—and Aedes aegypti—which spreads dengue fever and yellow fever. 

 Mosquitoes learned to associate the smell of pesticide with the negative effects of pesticide contact, and were willing to forgo blood-feeding to avoid landing in an area that smelled of pesticide, researchers said. 

 Mosquitoes have grown more resistant to pesticide in recent years, and researchers identified mosquito cognition as an overlooked factor in this change. However, new pesticide solutions could be developed with a delayed reaction, so that a mosquito that survives exposure will not learn to associate the smell of the pesticide with the negative experience, Frederic Tripet, director of the Centre for Applied Entomology and Parasitology at Keele University in the U.K., told ABC

Control of Biting Insects on Pigs.

How to control Biting Insects on Pigs.Biting insects such as flies, mosquitoes, midges or sand flies and ticks can cause major economic loss to pig farmers. Irritation from biting flies and mosquitoes can cause skin lesions or allergic–type reactions in pigs. Some pigs need to be skinned at the abattoir. Paralysis ticks can cause deaths among piglets and illness in older pigs housed outdoors, resulting in major financial loss for the farmer. The Dipteran biting flies of most significance to pig farmers are March flies (Family: Tabanidae), stable flies (Family: Muscidae), biting midges or sand flies (Family: Ceratopogonidae) and mosquitoes (Family: Culicidae). Each type of fly has it own specific habitat but they share a similar life cycle – eggs, larvae or maggots, pupae and adult form. Mosquitoes go through four instars or moults in their larval stage before forming pupae. Biting flies tend to be day–time feeders and most active on bright sunny days whereas mosquitoes tend to be night–time feeders. The females are mostly the biters and they seek blood for breeding and egg production. The flies multiply in warm, moist conditions so late spring, summer and early autumn tend to be the problem periods. Populations can increase dramatically as seasonal conditions change. House and bush flies, which do not bite, can also be a major nuisance to pigs and should be controlled using the same techniques.

Blood transfusions in high risk malaria zones could be made safer with new blood treatment technology.

Blood transfusions in high risk malaria zones could be made safer with new blood treatment technology.Patients, especially children, who undergo blood transfusions in sub-Saharan Africa are at high risk of transfusion-transmitted malaria. A new trial suggests that treating donated blood with a new technology that combines UV radiation and vitamin B is safe and could minimize the risk of malaria infection following blood transfusions. In many countries in sub-Saharan Africa where malaria is endemic, a high proportion of the population carry the parasite but do not show any clinical symptoms. This is a serious concern when it comes to donated blood transfusions as it puts the recipients at high risk of infection if no blood treatment procedure is provided.

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Chikungunya spreads to Turkish mosquitoes.

Chikungunya has been detected for the first time among Turkish mosquitoes, while West Nile virus and other mosquito-specific flaviviruses and alphaviruses also continue to proliferate in the region, according to data presented at European Congress of Clinical Microbiology and Infectious Diseases 2016. Previously reported data has described the prevalence of mosquitoes carrying West Nile virus (WNV) and other viruses to be increasing throughout various regions of Turkey, the researchers wrote, and often are concurrent with the emergence of case clusters. In addition, data presented at the same conference in 2015 also detailed the spread of WNV in neighboring Greece from 2011-2014. To investigate WNV and other mosquito-borne flaviviruses and alphaviruses in Turkish regions with increased residencies and refugee travel, the researchers sampled mosquitoes between June 2015 and August 2015 in the Aegean, Mediterranean and eastern Thrace regions. Captured using CDC light traps, the specimens were pooled and subjected to nucleic acid purification and cDNA synthesis after homogenization. Alphaviruses and flaviviruses were detected using generic nested and real-time PCR, with mosquito pools determined to be positive characterized by amplicon sequencing.The researchers collected and analyzed 4,105 specimens, the majority of which were obtained in eastern Thrace. The most prevalent species detected among these were Aedes caspius (61.2%), Anopheles maculipennis sensu lato (19.1%), Culex pipiens sensu lato (13.7%) and C. theileri (3.3%). All specimens were consolidated into 188 pools for the analysis. Alphavirus PCRs revealed positive results within two of the analysis pools, while flavivirus PCRs detected eight positive pools. Specimens in the alphavirus-positive pools were found to be carrying chikungunya virus — the first detection of the disease in Turkey. Diseases identified in the flavivirus-positive pools included WNV lineage 1 clade 1a, Mediterranean Culex Flavivirus and Mediterranean Ochleratatus Flavivirus. “Despite detection in mosquito species with limited vector potential, appropriate surveillance and diagnostic measures should be undertaken to monitor virus epidemiology and potential emergence of human cases,” the researchers wrote. Read more at European Congress of Clinical Microbiology and Infectious Diseases 2016.

Blood in a Mosquito’s Belly Could Reveal How Diseases Spread.

Keven is a doctoral student at Michigan State University, and leader of the mosquito-catching team. Over the last few summers, John Keven has spent many long nights under the stars in Papua New Guinea. For 12 hours at a time, he’ll scour a giant green net set up between thatched huts, looking for resting mosquitoes every 20 minutes. When he spots one with his headlamp, he quietly approaches, extending a long rubber tube to suck the bug off the net. Then he blows it from the tube into a container for analysis—in a lab halfway around the world. The undigested blood inside the Anopheles punctulatus mosquitoes Keven collects is going to the research team at the Cleveland Clinic in Ohio, which uses DNA markers to identify what the insects feed on through the night—information that could help predict how they spread disease. The team’s recent testing, published last month in the journal PLoS Neglected Tropical Diseases, revealed that this type of mosquito feeds on a wider range of species than expected, potentially influencing the way it transmits malaria. The bugs feast on the humans in the villages, but also the pigs, dogs, mice and even marsupial species in the area. But this study is only one of a growing number of attempts to characterize mosquito behavior by analyzing the blood they suck. The recent emergence of Zika virus, entomologists say that matching the DNA fingerprint of human blood inside mosquitoes with individuals could help shed light on how these insects spread disease—and who is most vulnerable. “The extent to which mosquitoes don’t bite on everyone the same might actually be important when you think about who’s most important to vaccinate,” says Steve Stoddard, an entomologist at San Diego State University who has studied mosquito feeding behaviors. Data from this type of work could influence how researchers mathematically model the possible future spread of diseases carried by mosquitoes. In 2014, Stoddard and his colleagues analyzed the feeding behaviors of the Aedes aegypti mosquito, the species that is a prime suspect in the current spread of Zika virus. This species can carry dengue, too, and it likes to hang around inside human dwellings, making it even riskier. The scientists collected mosquitoes from inside 19 households in Iquitos, a Peruvian port city on the Amazon, along with cheek swabs to capture DNA from 275 residents. read more here http://www.wired.com/2016/04/blood-mosquitos-belly-reveal-diseases-spread/

Yellow fever outbreak first reported in Angola kills 21 people in Congo.

Yellow fever outbreak that killed hundreds in Angola appears to be moving to neighboring Congo, where it has left at least 21 people dead. The Democratic Republic of Congo reported the deaths this week, the World Health Organization said in a statement that between January and March, at least 151 people were suspected of having the disease in the Congo. Some of the cases were detected in areas bordering Angola and "were imported" from there, according to the organization. At least 225 deaths have been reported in Angola as of this week, the nation's worst yellow fever outbreak in three decades. Most of the cases have been in the capital, Luanda. "The report of yellow fever infection in travelers returning from Angola ... highlights the risk of international spread," the WHO statement said. Yellow fever is transmitted by two types of mosquitoes, one of which is responsible for the Zika virus that has ravaged the Americas.The yellow fever virus is transmitted when a mosquito bites an infected monkey and then bites a human. Symptoms include fever, muscle pain, nausea, vomiting and loss of appetite, and can be confused for malaria or other mosquito-borne illnesses. A small percentage of infected people experience a second phase within 24 hours of becoming ill. It comes with more advanced symptoms, including jaundice, hemorrhaging and bleeding from the eyes, nose and mouth. At least half of the patients who get the second phase of the disease die within 10 to 14 days. There is no treatment for yellow fever, but patients can get supportive care.

New mosquito traps offer nontoxic alternatives in Zika fight.

Canadian and Mexican researchers have developed a novel, low-cost and effective method for capturing and destroying Aedes spp. mosquito eggs by using traps made from used tires. This new solution to mosquito control, which does not use pesticides or noxious chemicals, may have implications for the prevention of vector-borne diseases like dengue and Zika. Gérardo Ulíbarri, PhD, associate professor of chemistry and biochemistry at Laurentian University, Ontario, said in a press release that they decided to use recycled tires because tires already represent up to 29% of the breeding sites chosen by the Aedes aegypti mosquitoes, partly because tires are a universally affordable instrument in low-resource settings, and partly because giving old tires a new use creates an opportunity to clean up the local environment. Over the course of 10 months in a remote community in Guatemala — where dengue, chikungunya and Zika viruses are endemic — Ulíbarri and colleagues studied the effectiveness of a mosquito egg ovitrap called an “ovillanta.” The device, which is designed to imitate a natural breeding site for mosquitoes and attract egg-laying females, is fashioned from two sections of a used car tire that overlap in the shape of a mouth. According to the researchers, a nontoxic attractant solution is poured into the bottom half of the trap, which has a fluid release valve. Female insects lay their eggs on strips of pellon paper inside the ovillanta, and the eggs are counted to monitor the density of the mosquito population and then destroyed with fire or ethanol. Once emptied, the solution is filtered and used again, building up a higher concentration of a natural pheromone left with each egg that will attract other female mosquitoes to the site. In the study, Ulíbarri and colleagues compared the ovillanta with standard ovitraps made from buckets containing 1 L of clean water. According to the researchers, the contents of standard ovitraps are typically discarded onto the ground instead of being recycled, which can sometimes allow surviving Aedes eggs that did not adhere to the strip to hatch on dry soil up to several months later. Moreover, the need to replace clean water on a regular basis can be challenging in remote areas with limited infrastructure. Eighty-four ovillantas were used in seven neighborhoods in the urban core of Sayaxché, which has a population of approximately 15,000. Results indicated that significantly more mosquito eggs were trapped using the ovillantas as more than 181,000 eggs were destroyed during the 10-month period using the new method, almost seven times as many as control sites. Argentinian researchers from the Centro de Investigaciones de Plagas e Insecticidas (CIPEIN) also have designed a new ovitrap prototype — a cup made of low-density polyethylene infused with the larvicide pyriproxyfen, a WHO-recommended juvenile hormone analog that targets mosquito larvae during the pupal stage of development. Once the cup is filled with water, the larvicide is released from the plastic container, killing the eggs of A. aegypti mosquitoes. The CIPEIN researchers tested the plastic ovitrap on laboratory-raised A. aegypti and found that the device was 100% effective at preventing larvae from developing into adults during a 30-week period, even after the water in the container had been changed once a week. However, the researchers noted that field trials are necessary to test the prototype’s effectiveness to suppress A. aegypti populations. A practical tool for managing dengue vectors, must be a specific trap, effective, inexpensive, simple to construct and operate, and it should not require frequent maintenance. . Traps without toxic pesticides are more likely to be accepted by homeowners because of concerns about potential health and environmental hazards. This prototype in the study meets all these requirements. culled from; healio.com

MONKEY MALARIA.

New research shows that Plasmodium knowlesi, a form of malaria common in monkeys in South East Asia, is capable of flourishing in people. The monkey malaria is just a few steps away from becoming a major human disease. Manoj Duraisingh, a professor of immunology and infectious disease at the Chan School of Public Health at Harvard. Duraisingh is one of the authors of a new paper on P. knowlesi malaria published in Nature Communications. The team are really trying to understand whether what is normally thought to be a zoonotic disease( transmitted from animals to humans ) or is actually becoming something that is now transmitted between humans.There is growing concern that this simian parasite is adapting to infect humans more efficiently as stated in this new paper. In the last decade human cases of knowlesi malaria have been on the rise in parts of Southeast Asia. The So-called "monkey malaria" has become the most common form of malaria now detected in hospitals and clinics in Malaysian Borneo. Patients with knowlesi malaria suffer from intense bouts of fever and the symptoms are so similar to regular garden-variety malaria that it's often misdiagnosed as one of the five other human strains. The Plasmodium knowlesi parasites reside in forest-dwelling macaques as the parasites are well-adapted to the monkeys and the pests can reproduce easily in the macaques' blood. Mosquitoes that feed on the primates then spread the parasites to more and more monkeys. The knowlesi parasites and macaques were a closed system/end but as deforestation and the expansion of palm oil plantations in Malaysia that have cut into the monkeys' natural habitat, people and macaques have come in closer and more constant contact. This proximity has led to more people being bitten by mosquitoes laden with knowlesi parasites. "In many parts of Malaysia now it's the predominant malaria parasite that [doctors] actually see," Duraisingh says. The knowlesi parasite however generally doesn't reproduce as efficiently in human blood as in monkey blood because of a gene mutation — a complicated fork in the evolutionary tree — that happened 3 million years ago. Macaques got one gene. We got another. Our gene makes it much harder for knowlesi parasites to invade our red blood cells compared to those of macaques. This explains why most of the human cases of knowlesi malaria are fairly mild. Duraisingh says his team noticed a subset of malaria cases in Borneo that weren't mild at all,in these patients as the parasites multiply there are cyclical spikes of intense fever. Knowlesi malaria can be fatal but it does respond to standard malaria treatment if identified early. These intense cases of knowlesi malaria made Duraisingh and his colleagues think that there's something going on with the knowlesi parasite that might allow it to become more dangerous. In the lab Duraisingh found that the knowlesi parasite was able to find new ways to invade human red blood cells. They write: "It has been shown that P. knowlesi can expand its preferred host cell niche by invading older red blood cells and this is an important factor influencing adaptation of P. knowlesi to the human population."This new research shows that the knowlesi parasite is capable of adapting to life in a new host as demonstrated in the laboratory,that it can learn how to invade human blood cells quite quickly. The great concern is that as people, macaques and knowlesi-infected mosquitoes come into close contact, the parasite will increasingly adapt to the point where there's sustained transmission from human to human. When this happen, monkey malaria could become the next emerging infectious disease threat. Read more here;http://www.npr.org/sections/goatsandsoda/2016/04/08/473385975/monkey-malaria-creeps-closer-to-being-a-major-human-threat.

AVIAN MALARIA DETECTED IN NEW ENGLAND LOON.

A New England loon has died from avian malaria, according to researchers who believe this to be the first known case of a loon dying of the tropical disease. Loons can live for decades, so losing any adult loon to a new cause casts a long shadow says John Cooley, a senior biologist for the Loon Preservation Committee. Finding a new cause like this malaria strain, raises a real cause for concern. This indicates a new type of stressor associated with climate change. Avian malaria is carried by certain species of tropical mosquitoes. There is no evidence that avian malaria parasites are harmful to humans, according to Mark Pokras, professor emeritus of wildlife medicine at Tufts University. The world is changing, and the distribution of mosquitoes is changing for a whole variety of reasons,. Tropical mosquitoes that don’t occur here now are going to move farther north, and so are biting flies and ticks and a whole bunch of lovely parasites. The dead loon was spotted by campers at Umbagog National Wildlife Refuge and quickly retrieved by a refuge employee. The bird, specifically a “common loon,” was then put on ice and brought to the New Hampshire Veterinary Diagnostic Laboratory in Durham for examination. The examination was done by Inga Sidor, a New Hampshire state senior veterinary pathologist and she wasn’t even considering malaria to be the cause of death. Although she previously had detected malaria parasites in captive birds, such as penguins kept in zoos, but she had never seen malaria in a wild bird. At necropsy the spleen was really enlarged and tissue looked wet referred to as edema. Sidor then started to look for avian malaria, a disease that attacks red blood cells, affecting the vascular system. “These are tiny, tiny little parasites,” Sidor said. “They fit into a single cell, so you really have to have a body that’s in good condition to find them — and you have to be looking for them.” Having such a fresh specimen was crucial to the discovery. Sidor found widespread malaria parasites in the bird’s brain and heart, which leads her to believe the bird died either from a heart attack or cerebral paralysis. Furthermore, the degree of the infection leads Sidor to believe the disease was transmitted to the loon in New Hampshire, not when it migrated south to winter off the coast of mid-Atlantic states. After Sidor’s examination, the loon was inspected by Ellen Martinsen of the Smithsonian Conservation Biology Institute, who discovered that the bird contained not one but two different malaria parasite species — an unusual find. Read more here;http://bangordailynews.com/2016/04/08/outdoors/loon-dies-of-tropical-disease-stirring-talk-of-climate-change/

ZIKA VIRUS LINKED TO BRAIN DISORDER IN ADULTS.

Zika has already been linked with the autoimmune disorder Guillain-Barre syndrome, which attacks peripheral nerves outside the brain and spinal cord, causing temporary paralysis that can in some cases require patients to rely on respirators for breathing. Scientists in Brazil have uncovered a new brain disorder associated with Zika infections in adults: an autoimmune syndrome called acute disseminated encephalomyelitis, or ADEM, that attacks the brain and spinal cord. The new discovery now shows Zika may provoke an immune attack on the central nervous system as well and this findings add to the growing list of neurological damage associated with Zika. According to the World Health Organization, there is a strong scientific consensus that, in addition to Guillain-Barre, Zika can cause the birth defect microcephaly, though conclusive proof may take months or years. Microcephaly is defined by unusually small heads that can result in developmental problems. In addition to autoimmune disease, some researchers also have reported patients with Zika infections developing encephalitis and myelitis – nerve disorders typically caused by direct infections in nerve cells. Acute disseminated encephalomyelitis, or ADEM, typically occurs in the aftermath of an infection, causing intense swelling in the brain and spinal cord that damages myelin, the white protective coating surrounding nerve fibers. It results in weakness, numbness and loss of balance and vision, symptoms similar to multiple sclerosis. The scope of study is small, it may provide evidence that in this case, the virus has different effects on the brain than those identified in current studies,” Dr. Maria Lucia Brito, a neurologist at Restoration Hospital in Recife, Brazil. The study involved 151 patients who visited her hospital between December 2014 and June 2015. All had been infected with arboviruses, the family of viruses that includes Zika, dengue and chikungunya. Six of these patients developed symptoms consistent with autoimmune disorders. Of these six, four had Guillain-Barre and two had ADEM. In both ADEM cases, brain scans showed damage to white matter. ADEM symptoms typically last about six months. All six patients tested positive for Zika, and all had lingering effects after being discharged from the hospital, with five patients reporting motor dysfunction, one with vision problems, and one with cognitive decline. Read more at http://newsdaily.com/2016/04/brazilian-scientists-find-new-zika-linked-brain-disorder-in-adults/#3W9X77ZDhHxA6TKB.99

MOSQUITOES , PATHOGENS AND GLOBAL THREAT.

The world focuses on Zika's rapid advance in the Americas but experts warns the virus that originated in Africa is just one of a growing number of continent-jumping diseases carried by mosquitoes threatening humanity. The Aedes aegypti species blamed for transmitting Zika breeds in car tires, tin cans, dog bowls and cemetery flower vases. And its females are great at spreading disease as they take multiple bites to satisfy their hunger for the protein in human blood they need to develop their eggs. Around the world, disease-carrying mosquitoes are advancing at speed, taking viruses such as dengue and Zika, plus a host of lesser-known conditions such as chikungunya and St. Louis encephalitis, into new territories from Europe to the Pacific. In 2014, there was a large outbreak of chikungunya, which causes fever and joint pains, in the Caribbean, where it had not been seen before, while the same virus sickened Italians in 2007 .Europe has seen the re-emergence of malaria in Greece for the first time in decades and the appearance of West Nile fever in eastern parts of the continent. The speed of change in mosquito-borne diseases since the late 1990s has been unprecedented, for many experts the biggest potential threat is Aedes albopictus, otherwise known as the Asian tiger mosquito. This is expanding its range widely and is capable of spreading more than 25 viruses, including Zika. There is evidence that Aedes albopictus is now out-competing aegypti in some areas and becoming more dominant, in the United States, Aedes albopictus has been found as far north as Massachusetts and as far west as California. In Europe it has reached Paris and Strasbourg. The global movement of mosquitoes rests on the increase in human travel, humans are moving the pathogens around and the mosquitoes are waiting there to transmit them. Deforestation in Malaysia, for example, is blamed for a steep rise in human cases of a type of malaria usually found in monkeys. The elimination of mosquitoes,their breeding sites and avoiding mosquito bites in mosquito prone areas are some of the measures to keep the mosquito menace at bay. Read more here; http://veterinarymedicineechbeebolanle-ojuri.blogspot.com.ng/2016/01/the-zika-threat-and-global-village.html

New virus transmission route discovered in pigs.

Japanese Encephalitis (JE) virus causes serious inflammation of the brain in people and fertility problems in pigs. Mosquitoes were previously the only known transmission route. However, the virus can also be spread from pig to pig by direct contact, and this could enable it to circulate in pigs during the mosquito-free winter season. The JE virus is the main cause of serious encephalitis in people in Asia. The virus is found in large parts of Southeast Asia and is now also widespread in India. It circulates between birds and mosquitoes and between pigs and mosquitoes, and is passed to humans through mosquito bites. In children in particular, infection can lead to acute encephalitis and permanent impairment or even death. In pigs, the main effect of the virus alongside fever and encephalitis is fertility problems. The virus is closely related to the West Nile, Zika and dengue viruses. All are transmitted by mosquitoes and are flaviviruses, which cause serious illness in humans and animals. Previously, the only known transmission route for JE viruses was mosquitoes. A team of researchers from the Institute of Virology and Immunology and the University Bern at the Vetsuisse Faculty led by Dr. Meret Ricklin and Prof Artur Summerfield have now shown that JE viruses can also be passed directly from pig to pig. The study has just been published in the journal "Nature Communications."

THE ZIKA VIRUS# MICROCEPHALY.

The Zika virus is "spreading explosively" in the Americas and the region may see up to four million cases of the disease strongly suspected of causing birth defects, the World Health Organization . The Zika virus, unlike other mosquito-borne viruses such as dengue, is relatively unknown and unstudied. That is set to change since Zika, now spreading through Latin America and the Caribbean, has been associated with an alarming rise in babies born in Brazil with abnormally small heads and brain defects -- a condition called microcephaly. Since the Zika outbreak began in northeastern Brazil last spring, an estimated 500,000 to 1.5 million people have been infected. The resulting illness only lasts a few days. The symptoms, including a rash, joint pains, inflammation of the eyes and fever, tend to be less debilitating than those of dengue. As many as 80 percent of infected people may be asymptomatic. It was not until months after Zika cases showed up in Brazil that a spike in microcephaly births was tied to women infected during pregnancy. More than 3,500 microcephaly cases have been reported since October in Brazil, compared to around 150 cases in 2014. While Zika's connection to microcephaly has yet to be definitively proven, the presence of the virus has been found in the bodies of five of the newborns that died with the condition and in the placentas of two women who miscarried babies with microcephaly.

THE ZIKA VIRUS.

On Monday (Jan. 25), the World Health Organization announced that Zika virus, a mosquito-borne illness that in the past year has swept quickly throughout equatorial countries, is expected to spread across the Americas and into the United States. Zika virus is transmitted by the mosquito species Aedes aegypti, also a carrier of dengue fever and chikungunya, two other tropical diseases. Though Aedes aegypti is not native to North America, researchers at the University of Notre Dame who study the species have reported a discovery of a population of the mosquitoes in a Capitol Hill neighborhood in Washington, D.C. , the team identified genetic evidence that these mosquitoes have overwintered for at least the past four years, meaning they are adapting for persistence in a northern climate well out of their normal range. This mosquito is typically restricted to tropical and subtropical regions of the world and not found farther north in the United States than Alabama, Mississippi, Georgia and South Carolina. What this means for the scientific world," said Severson, who led the team, "is some mosquito species are finding ways to survive in normally restrictive environments by taking advantage of underground refugia. Therefore, a real potential exists for active transmission of mosquito-borne tropical diseases in popular places like the National Mall.(source ;science daily) The emergence of mosquitoes in normally restricted areas has exposed the pandemic potential of the ZIKA VIRUS,with pregnant women at highest risk.Prevention of mosquito bites through use of treated nets,insecticides,and clearing environment of stagnant water,destruction of developmental stages and more recently the introduction of genetically modified mosquitoes to wipe out the infective strains have all been employed to reduce disease incidence. Travelling to zika-risk zones by pregnant women has also been initiated as they are mostly prone to the infection.

A renewable streetlight that fights mosquitoes.

Researchers in Malaysia have created a light that not only combats climate change; it fights mosquito-borne diseases too. The LED street light is a renewable energy hybrid, incorporating both a solar panel and a wind turbine. Mosquitoes are drawn to the lamp because it emits carbon dioxide, the same gas that humans naturally give off. Lead researcher Dr Chong Wen Tong said the CO2 given off is “relatively low” and outstripped by the benefits of the clean energy it provides. A fan then prevents the mosquitoes from escaping. The researchers hope that the new form of lighting could help to prevent dengue fever, a virus that is widespread in the tropics and for which there is currently no vaccine. Two pilot lamps are currently in use on the campus at the University of Malaya in Kuala Lumpur where the researchers are based and six installed elsewhere in Kuala Lumpur. The product is now set to enter the market. The product has much more longevity than traditional street lighting, but the pilot cost £20,000 to produce and the individual lamps currently cost around £1,700. Solving the power issue and preventing diseases and nuisance of mosquitoes; its a worthy innovation. Story credit;the guardian.

WEST NILE VIRUS IN HORSES.

The west nile virus affects birds,horses and man.Its a mosquito borne illness ;the mosquito acquires the virus by biting and sucking blood of infected horses or birds.The infection is prevalent in horses stabled in swampy regions, barns surrounded with over grown weeds and stables with high population of mosquitoes.The infection is also prevalent in un vaccinated horses, vaccinated horses could be subject to the infection if stabled in mosquito-ridden environment. Signs of infection include; incordination, muscle twitching,fever, weakness, partial paralysis and death. Prevention; vaccination. strict bio security protocol. prevent exposure to mosquitoes. .

VETERINARY MEDICINE: HORSES AND MOSQUITOES.

Mosquitoes cause a number of diseases in horses such as west Nile virus,the eastern,Venezuelan and western encephalomyelitis..The mosquitoes transmit these infectious agents by sucking blood of the horses.The mosquito bite though painful characterized by chewing and scratching cause severe diseases,and vaccination is the only form of prevention of such diseases. Horses should be protected from mosquitoes in barns and stalls to prevent these infections; these tips will keep horses/stables mosquito free. 1)remove any object that can collect water,destroy all tins or vessels that has stagnant water. 2)dont litter pasture with manure. 3)deworm horses regularly. 4) spray insecticides in stables/barns, 5) keep drains clean and spray insecticides in drain. 6) use fans in stables/barns to deter mosquitoes.Mosquitoes operate where there is heat and carbon dioxide buildup,thus using fans will ensure free flow of air and remove the carbon dioxide.The fans keep the air moving,making it impossible for the mosquitoes to operate as they only function where air is still. 7) remove manure from stalls daily and from pasture 2 times a week. 8) use of screens in stable. 9)dont leave lights on overnight in stables and during the evening.