Zika virus outbreak (2016)
A member of the virus family Flaviviridae, Zika virus (ZIKV) is spread by daytime-active Aedes albopictus and Aedes aegypti mosquitoes. Zika virus is related to the Dengue, Yellow Fever, Encephalitis, and West Nile viruses. Since the 1950s, it has been known to occur within a narrow equatorial belt from Africa to Asia. From 2007 to 2016, the virus spread eastward, across the Pacific Ocean to the Americas, leading to the 2015–16 Zika virus epidemic.
The links below provide information on the Health and Human Services (HHS) Public Health Emergency Declaration and its subsequent renewal. Additional information on the ZIKV is found in the Centers for Disease Control and Prevention (CDC) link, found in the Related Link section.Related links:
- November 4, 2016: Renewal of determination that a Public Health Emergency exists
- January 31, 2017: Determination that a Public Health Emergency exists in Puerto Rico as a consequence of the Zika Virus outbreak
H1N1 pandemic (2009)
First described in April 2009, the H1N1 virus appeared to be a new strain of influenza which resulted when a previous triple re-assortment of bird, swine and human flu viruses combined with a Eurasian influenza virus. Because it had not previously existed, there was no previously developed immunity, and a larger than average number of humans were either susceptible to – or affected by – the virus.
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