Symptoms of three more cases began on 10 December, which were later confirmed by laboratories. This was the onset of the first 41 people who were tested and later confirmed positive for COVID-19, as reported by the Wuhan City Health Committee and the WHO in 2020. Two antibody studies in the United States suggested a presence of SARS-CoV-2 in the United States in December 2019. His family was unaffected, and no epidemiological link was found between him and the other laboratory-confirmed cases as of 2 January. The man had not been to the Huanan Seafood Wholesale Market. Symptoms of the index case, or patient zero, began on 1 December. Since then, the head of the WHO COVID-19 origins investigative team, Peter Ben Embarek, has stated that the Chinese authorities exerted pressure on the WHO report conclusions, and that he in fact considers an infection via a researcher's field samples to be a "likely" scenario. However, a WHO report states "introduction through a laboratory incident was considered to be an extremely unlikely pathway". The report added weight to calls for a broader probe into the theory that the COVID-19 virus could have escaped from a laboratory. intelligence obtained that three researchers working at the BSL-4 laboratory of the Wuhan Institute of Virology were hospitalized with COVID-like symptoms. On, The Wall Street Journal reported that newly disclosed U.S. On 13 March 2020, the South China Morning Post reported that Chinese government records suggest that the first case of infection with COVID-19 could be traced back to a 55-year-old Hubei resident on 17 November. See also: Investigations into the origin of COVID-19Īccording to an ABC news report, the American National Center for Medical Intelligence shared intelligence regarding a potential respiratory disease in Wuhan. It urges further investigation of these potential early events. A WHO report states: "the study findings were not confirmed, methods used were not standardized, and serological assays may suffer from non-specific signals". Some medical and environmental analyses in Italy, France, and the US found results which suggested the virus was circulating prior to December 2019 by several weeks. However, a subsequent retrospective surveillance report determined there was no evidence of SARS-CoV-2 circulation in Rome (Italy) during this period. Unconfirmed reports of early cases Ī September 2020 review noted about the hypothetical possibility that the COVID-19 infection had already spread to Europe in 2019 by presumptive evidences including pneumonia case numbers and radiology in France and Italy in November and December. 12.2 Interregional and international responses.
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