Public Health Emergency of International Concern second PHEIC was issued in May 2014 with the resurgence of polio after its near-eradication, deemed "an extraordinary event." On Friday, August 8, 2014, the World Health Organization declared its third Public Health Emergency of International Concern in response to the outbreak of Ebola in Western Africa. On Monday, February 1, 2016, the World Health Organization declared its fourth PHEIC in response to clusters of microcephaly and Guillain–Barré syndrome in the Americas, which at the time were suspected to be associated with the ongoing outbreak of Zika virus. Later research and evidence bore out these concerns; in April, the WHO
1985 World Health Organization AIDS surveillance case definition 12 or more. The 1985 WHO AIDS surveillance case definition was heavily criticised, for both medical and political reasons. The 1994 expanded World Health Organization AIDS case definition was introduced in 1994 to incorporate the statement that HIV testing "should" be done. However, if testing was unavailable, then the Bangui definition should be used. 1985 World Health Organization AIDS surveillance case definition The 1985 World Health Organization AIDS surveillance case definition was developed in October 1985, at a conference of public health officials including representatives of the Centers for Disease Control (CDC) and World Health Organization (WHO) in Bangui, Central