CAMELS AND MERS VIRUS.

Camels, which are bred and raised for their milk and meat and for racing, are thought to be the initial source of human outbreaks. The virus is particularly prevalent in juvenile camels, where infection results in symptoms that are similar to a common cold. The virus is thought to pass to humans when they have contact with an infected camel's body fluids. Circulation of Mers in camels poses a serious risk to human health and many scientists are worried that the virus might mutate to become better adapted to human spread. That's why scientists are trying to develop vaccines - to stop the virus infecting humans and also to reduce the amount of virus circulating in camels. Vaccination is aimed at protection;Vaccines train our immune response to recognize a virus and to wipe it out before it can infect us or before it can do any harm.The vaccine acts in 2 forms;there are two arms to this protection - antibodies and killer cells. Antibodies are proteins found in human blood and in body fluids like mucus and saliva and these attach to the virus and stop it infecting. The Killer cells, , track down virus infected cells and kill the cell before new virus is released. Some vaccines raise antibodies, some produce killer cells and some raise both. The MERS infection of humans was first described in Saudi Arabia in 2012 and Since then there have been more than 1,600 reported cases. One third of reported infections have resulted in death. Individuals with other illnesses - such as diabetes, long term lung disease or kidney failure - are particularly prone to developing life-threatening symptoms. Virus spread is limited to people who have close contact with those who are infected, such as family members and healthcare workers. There are no treatments for Mers but scientists are trying to develop an effective vaccine.