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Since 2012, the World Health Organization (WHO) has been notified of 1626 laboratory-confirmed cases of Middle East Respiratory Virus Syndrome (MERS) as of January 7, 2016 ( link ). These cases have been reported from 26 countries as shown on the map and table below. Cases have been reported from most continents: North America, Africa, Europe, and Asia. No cases have been yet been reported from South America, Australia, or the sparsely inhabited Antarctica. More than 75% of these cases have been reported from Saudi Arabia.  Countries Reporting MERS infections to WHO   Worldwide count of MERS cases   The earliest cases of MERS in 2012 were geographically associated with countries in the Middle East. Numerous cases in Saudi Arabia are reported as “primary cases”, autochthonous cases, which have been infected from local animal hosts. Current research indicates that camel populations on the Arabian Peninsula are a reservoir for this coronavirus, although there may be ot...

In 2014, 366 human cases of avian influenza infection from four subtypes, A(H7N9), A(H5N1), A(H5N6) and A(H10N8) were reported from 7 countries, China, Egypt, Taiwan, Malaysia, Cambodia, Indonesia, and Vietnam. The case-fatality risk ranged from possibly as low as .22 to as high as .67 among these subtypes in 2014. There is no evidence among any of these subtypes of sustained human-to-human transmission. Influenza viruses that easily circulate among human populations are referred to as seasonal influenza viruses and can cause severe illness in 3 to 5 million individuals annually.[1] Avian influenza Type A viruses that cause infection in birds are referred to as avian influenza viruses. These viruses occur naturally among wild birds worldwide and can infect domestic poultry and other bird and animal species.[2] These avian influenza viruses circulating in bird populations do not usually infect humans. However, sometimes humans can become infected with avian influenza subtypes which hav...