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From the early outbreak of the COVID-19 pandemic, rumors and speculation arose about the possible lab origins of SARS-CoV-2, the causative agent of the COVID-19 disease. . Different versions of the lab origin hypothesis present different scenarios in which a bat-borne progenitor of SARS-COV-2 may have spilled over to humans, including a laboratory-acquired infection of a natural or engineered vi
Several studies found only weak signs of adaptive evolution early in the COVID-19 pandemic. [c] Kang et al. wrote that SARS-CoV-2 had exhibited relatively little genetic variation by 2021. [47] Tai et al. wrote that population expansion rather than positive selection explained the mutation frequency spectrum during the early pandemic. [49]
A number of COVID‑19 vaccines began to become approved and available at scale in December 2020, with vaccinations beginning to ramp up at scale from the beginning of 2021, among them the Oxford–AstraZeneca COVID‑19 vaccine, based on an adenovirus vector and internally termed AZD1222.
This article documents the chronology and epidemiology of SARS-CoV-2 in January 2021, the virus which causes the coronavirus disease 2019 and is responsible for the COVID-19 pandemic. The first human cases of COVID-19 were identified in Wuhan , China , in December 2019.
On 14 April 2021, the Director of National Intelligence Avril Haines, along with other Biden administration officials, said that they had not ruled out the possibility of a laboratory accident as the origin of the COVID-19 virus. [78] On 26 May 2021, President Joe Biden directed the U.S. intelligence community to produce a report within 90 days ...
New Zealand's COVID-19 Response Minister Hipkins has reinstated Level 3 lockdown restrictions in parts of the Waikato region including Waitomo (including Te Kūiti), Waipā, Ōtorohanga, Mōkau, the northern Pureora Forest Park, Te Awamutu, Karapiro and Cambridge in response to new community cases.
Assessment on COVID-19 Origins [1] is a 2021 United States intelligence report, which was commissioned on May 26, 2021 by President Joe Biden and declassified in August of the same year. Biden initially ordered his intelligence services to "redouble efforts" concerning the origins of the SARS-CoV-2 virus. [ 2 ]
New Caledonia reported its first COVID-19-related death, a 75-year-old man who died in hospital. 51 new cases were reported, bringing the total number of active cases to 117. [70] New Zealand has reported 19 new cases, bringing the total number to 3,866 (3,510 confirmed and 356 probable).