Dr.... Michael Worobey, an evolutionary biologist at the University of Arizona, was published

's Hubei province, on Feb.... Michael Worobey, an evolutionary biologist at the University of

A new peer-reviewed research paper points to the likelihood that the COVID-19 pandemic originated at a seafood and wildlife market in Wuhan, China, rather than from a Chinese laboratory studying bat viruses.... The patients either worked at the market or had friends or other contacts who did, some of whom has visited their homes.... For even early cases not directly linked to the market to arise among patients with home addresses clustered around the market “ is an absolutely crucial point, ”

A scientist who has pored over public accounts of early Covid-19 cases in China reported on Thursday that an influential World Health Organization inquiry had most likely gotten the early chronology of the pandemic wrong.... “ It becomes very difficult to explain that pattern if the outbreak didn’t start at the market.” Several experts, including one of the pandemic investigators chosen by the W.H.O., said that Dr.... They suggested that the virus probably infected a “ patient zero ” sometime

It indicated that the 241 sequences had been collected by a scientist named Fu Aisi at Renmin Hospital in Wuhan. Searching medical literature, Dr Bloom eventually found another study posted online in March 2020 by Fu and colleagues, describing a new experimental test for Sars-CoV-2.... Instead, they publishedonly some mutations in the viruses. But a number of clues indicated to Dr Bloom that the samples were the source of the 241 missing sequences.... The papers included no explanation as to w

She died last year on 6 February.... It was revised on the basis of symptoms rather than testing, according to US media reports. The authorities were initially also probing a fifth case from Oklahoma that they suspected to be a case of Covid-related death.... But for deaths in the first two months of 2020 he would call state health officials directly to confirm them. The officials in turn ask for verification from the doctor who issued the death certificate....