4 days ago · The CIA “continues to assess that both research-related and natural origin scenarios of the COVID-19 pandemic remain plausible,” the agency wrote in a statement about its new assessment. Instead of new evidence, the conclusion was based on fresh analyses of intelligence about the spread of the virus, its scientific properties and the work ...

4 days ago · “CIA assesses with low confidence that a research-related origin of the COVID-19 pandemic is more likely than a natural origin based on the available body of reporting,” a CIA spokesperson ...

In February 2021, after conducting part of their study, the WHO stated that the likely origin of COVID-19 was a zoonotic event from a virus circulating in bats, likely through another animal carrier, and that the time of transmission to humans was likely towards the end of 2019.

4 days ago · The CIA now assesses the virus that causes Covid-19 more likely originated from an accidental lab leak in China, rather than occurring naturally, according to a statement from the agency Saturday ...

Jun 7, 2023 · When health emergencies arise, scientists seek to discover the cause — such as how a pathogen emerged and spread — because this knowledge can enhance our understanding of risks and strategies for...

Nov 21, 2023 · There are two hypotheses as to COVID-19's origins: exposure to an infected animal or a laboratory leak. There is not enough evidence to support either argument. The latest...

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]

Mar 30, 2021 · WHO calls for further studies, data on origin of SARS-CoV-2 virus, reiterates that all hypotheses remain open

Aug 15, 2022 · Until recently, there were multiple theories about the origins of SARS-CoV-2. Finger-pointing, politics, and mis- and disinformation soured the discussion, but researchers have continued to prod for answers.

Nevertheless, a large body of virologic, epidemiologic, veterinary, and ecologic data establishes that the new virus, SARS-CoV-2, evolved directly or indirectly from a β-coronavirus in the sarbecovirus (SARS-like virus) group that naturally infect bats …