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The scientific consensus is that the virus is most likely of a zoonotic origin, from bats or another closely related mammal. [36] [39] [40] While other explanations such as speculations that SARS-CoV-2 was accidentally released from a laboratory have been proposed, [41] [42] [43] as of 2021 these were not supported by evidence. [44]
It’s back-to-school time — or nearly — for kids across the United States. While some schools have already started, other families are busy preparing for school starting in the weeks ahead ...
As you dive into your New Year’s resolutions, taking precautions to protect yourself from a quartet of infectious diseases can lessen your odds of starting off 2025 sick.
Hong Kong flu: 1968–1970 Worldwide Influenza A virus subtype H3N2: 1–4 million [187] [203] [204] 1971 Staphorst polio epidemic 1971 Staphorst, Netherlands Poliomyelitis: 5 [207] 1972 Yugoslav smallpox outbreak: 1972 Yugoslavia: Smallpox: 35 [208] London flu: 1972–1973 United States Influenza A virus subtype H3N2: 1,027 [209] 1973 Italy ...
The World Health Organization (WHO) designated XBB.1.16 as a "variant under monitoring" in late March, indicating Arcturus may demonstrate a "growth advantage relative to other circulating variants."
[111] [168] The BBC also made it clear that the genetic sequences of the virus, as far as is known, date back to a West African strain. [111] Some online misinformation also included claims that the COVID-19 vaccine included mpox or that mpox was going to be used to justify new widespread lockdowns akin to those that occurred during COVID-19. [169]
The incubation period of the virus can be three to six days, according to the CDC, and the groups at highest risk include younger children and adults 65 or older.
The timeline of the COVID-19 pandemic lists the articles containing the chronology and epidemiology of SARS-CoV-2, [1] the virus that causes the coronavirus disease 2019 and is responsible for the COVID-19 pandemic. The first human cases of COVID-19 occurred in Wuhan, People's Republic of China, on or about 17 November 2019. [2]