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The principal hypothesis for the origin of COVID-19 is that it became infectious to humans through a natural spillover event (zoonosis). That it became infectious to humans through escape from a laboratory where it was being studied is a minority position. The available evidence supports zoonosis.
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 virus. Some early rumors focused on the deliberate leak of a virus as a bioweapon or accidental leak of an engineered virus.
Human-to-human transmission of SARS‑CoV‑2 was confirmed on 20 January 2020 during the COVID-19 pandemic. [ 16 ] [ 39 ] [ 40 ] [ 41 ] Transmission was initially assumed to occur primarily via respiratory droplets from coughs and sneezes within a range of about 1.8 metres (6 ft).
Scientists are only starting to grasp the vast array of health problems caused by the novel coronavirus.
SARS-CoV-2, the causative agent of COVID-19, was first introduced to humans through zoonosis (transmission of a pathogen to a human from an animal), and a zoonotic spillover event is the origin of SARS-CoV-2 that is considered most plausible by the scientific community.
The FBI concluded with "moderate confidence" that COVID-19 may have been created in a laboratory, based in part on genomic analysis conducted by scientists at the National Center for Medical Intelligence. [98] On 20 March 2023, the COVID-19 Origin Act of 2023 was signed into law. On June 23, 2023, the Biden administration released its report ...
Conspiracy theories and misinformation about coronavirus damage society in a number of ways.
Experts tell Yahoo Life the drug can cause mania, delirium and even psychosis. President Trump was given dexamethasone, a corticosteroid, to help combat COVID-19. Experts tell Yahoo Life the drug ...