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The COVID-19 vaccines are widely credited for their role in reducing the severity and death caused by COVID-19. [ 128 ] [ 129 ] As of March 2023, more than 5.5 billion people had received one or more doses [ 130 ] (11.8 billion in total) in over 197 countries.
The human coronavirus NL63 shared a common ancestor with a bat coronavirus (ARCoV.2) between 1190 and 1449 CE. [76] The human coronavirus 229E shared a common ancestor with a bat coronavirus (GhanaGrp1 Bt CoV) between 1686 and 1800 CE. [77] More recently, alpaca coronavirus and human coronavirus 229E diverged sometime before 1960. [78]
SARS-CoV-2 is the seventh known coronavirus to infect people, after 229E, NL63, OC43, HKU1, MERS-CoV, and the original SARS-CoV. [105] Like the SARS-related coronavirus implicated in the 2003 SARS outbreak, SARS‑CoV‑2 is a member of the subgenus Sarbecovirus (beta-CoV lineage B). [106] [107] Coronaviruses undergo frequent recombination. [108]
The Class of COVID-19: Insights from the Inside is a collection of writing about the COVID-19 pandemic by students from Cliffside Park High School, in Cliffside Park, New Jersey, published on 2 June 2020. It contains pieces by forty-six students and was edited by Cliffside Park High School English teacher Shawn Adler.
7 February – Prime Minister Boris Johnson announces what he describes as "tough targets" to reduce the record NHS waiting lists in England. [36]8 February – Health Secretary Sajid Javid announces plans to help reduce NHS waiting lists in England, but warns numbers will not begin to fall until 2024, and are likely to increase in the short term.
[52] [53] [54] As of July 2021, a large number of drugs had been considered for treating COVID-19 patients. [55] As of November 2022, there was moderate-certainty evidence suggesting that dexamethasone, and systemic corticosteroids in general, probably cause a slight reduction in all-cause mortality (up to 30 days) in hospitalized patients with ...
In 2022, about a third of voters who requested but did not return their mail ballots ultimately voted in person. Taking 2022 as a guide, we would expect around 90,000 to vote in person, with about ...
Over 1000 colleges in the United States required on-campus students to be fully-vaccinated against COVID-19 for the 2021–2022 academic year. [328] Of those 1000 schools, over 300 also require that students receive a booster shot. [329]