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Chickenpox, also known as varicella (/ ˌ v ɛ r ə ˈ s ɛ l ə / VER-ə-SEL-ə), is a highly contagious disease caused by varicella zoster virus (VZV), a member of the herpesvirus family. [ 3 ] [ 7 ] [ 5 ] The disease results in a characteristic skin rash that forms small, itchy blisters , which eventually scab over. [ 1 ]
1759 North America measles outbreak 1759 North America Measles: Unknown [109] 1760 Charleston smallpox epidemic 1760 Charleston, British North America: Smallpox: 730–940 [110] [111] 1762 Havana yellow fever epidemic 1762 Havana, Cuba: Yellow fever: 8,000 [106] 1763 Pittsburgh area smallpox outbreak 1763 North America, present-day Pittsburgh ...
2003 Midwest monkeypox outbreak; 2006 North American E. coli O157:H7 outbreak in spinach; 2006 North American E. coli O157:H7 outbreaks; 2008 United States salmonellosis outbreak; 2009 swine flu pandemic in the United States; 2011 United States listeriosis outbreak; 2012 outbreak of Salmonella; 2012–2013 flu season; 2014 enterovirus D68 outbreak
The chicken pox vaccine became available in the U.S. in 1995 and, since then, cases of the virus in the U.S. have plummeted. But chicken pox still emerges from time to time. Montana public health ...
It’s been deemed the worst bird flu outbreak in American history—and the virus is showing no signs of stopping. Since the beginning of this year, nearly 2.5 million birds from commercial and ...
A 16th-century illustration of Nahuas infected with smallpox.. In epidemiology, a virgin soil epidemic is an epidemic in which populations that previously were in isolation from a pathogen are immunologically unprepared upon contact with the novel pathogen. [1]
California’s dairy operators, for the first time in history, are also battling the avian flu virus that has, so far, infected 133 dairies in the state and made 13 dairy workers sick with mild ...
The 1520s smallpox epidemic spread from Mesoamerica into adjacent maize-growing regions in North America.A population decline in the Columbia Basin, evidenced archaeologically by a sharp regional decline in artifacts and structures in the early 1500s, has been tentatively linked to a spread of this outbreak, but greatly predates any written record in the region.