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
Bulletin of the World Health Organization Abstracts on Hygiene, Biological Abstracts, Current Contents, Excerpta Medica, International Pharmaceutical Abstracts, Index Medicus/MEDLINE/PubMed, Nutrition Abstracts and Reviews, Pollution Abstracts, Science Citation Index, and Tropical Diseases Bulletin. According to the "Journal Citation Reports", the journal has a 2009 impact factor of 5.302, ranking it 7th out of 122 journals in the category "Public, Environmental & Occupational Health". Other publications of the World Health Organization: Bulletin of the World Health Organization The Bulletin of the World Health Organization is a monthly public health journal published by the World Health Organization that was established in 1947. It aims to give public health