History Of Covid19

Womenscorner Desk
October 2, 2020

The virus is assumed to be natural and has an animal origin, through spill over infection. the primary known human infections were in China. A study of the primary 41 cases of confirmed COVID-19, published in January 2020 within the Lancet, reported the earliest date of onset of symptoms as 1 December 2019. Official publications from the WHO reported the earliest onset of symptoms as 8 December 2019.

Human-to-human transmission was confirmed by the WHO and Chinese authorities by 20 January 2020. consistent with official Chinese sources, these were mostly linked to the Huanan Seafood Wholesale Market, which also sold live animals. In May 2020, George Gao, the director of the Chinese Center for Disease Control and Prevention, said animal samples collected from the seafood market had tested negative for the virus, indicating that the market was the location of an early superspreading event, but it had been not the location of the initial outbreak. Traces of the virus are found in wastewater that was collected from Milan and Turin, Italy, on 18 December 2019.

There are several theories about where the very first case (the so-called patient zero) originated. consistent with an unpublicised report from the Chinese government, the primary case are often traced back to Revolutionary Organization 17 November 2019; the person was a 55-year-old citizen within the Hubei province. there have been four men and five women reported to be infected in November, but none of them were "patient zero". By December 2019, the spread of infection was almost entirely driven by human-to-human
transmission. the amount of coronavirus cases in Hubei gradually increased, reaching 60 by 20 December and a minimum of 266 by 31 December. On 24
December, Wuhan Central Hospital sent a bronchoalveolar lavage fluid (BAL) sample from an unresolved clinical case to sequencing company Vision Medicals. On 27 and 28 December, Vision Medicals informed the Wuhan Central Hospital and therefore the Chinese CDC of the results of the test, showing a replacement coronavirus.

A pneumonia cluster of unknown cause was observed on 26 December and treated by the doctor Zhang Jixian in Hubei Provincial Hospital, who informed the Wuhan Jianghan CDC on 27 December. On 30 December, a test report addressed to Wuhan Central Hospital, from company CapitalBio Medlab, stated an erroneous positive result for SARS, causing a gaggle of doctors at Wuhan Central Hospital to alert their colleagues and relevant hospital authorities of the result. That evening, the Wuhan Municipal Health Commission issued a notice to varied medical institutions on "the treatment of pneumonia of unknown cause". Eight of those doctors, including Li Wenliang (punished on 3 January), were later admonished by the police for spreading false rumours, and another, Ai Fen, was reprimanded by her superiors for raising the alarm.

The Wuhan Municipal Health Commission made the primary public announcement of a pneumonia outbreak of unknown cause on 31 December, confirming 27 cases enough to trigger an investigation. During the first stages of the outbreak, the amount of cases doubled approximately every seven and a half days. In early and mid-January 2020, the virus spread to other Chinese provinces, helped by the Chinese New Year migration and Wuhan being a transport hub and major rail interchange.

On 20 January, China reported nearly 140 new cases in at some point , including two people in Beijing and one in Shenzhen. Later official data shows 6,174 people had already developed symptoms by then, and more may are infected. A report within the Lancet on 24 January indicated human transmission, strongly recommended personal protective equipment for doctors , and said testing for the virus was essential thanks to its "pandemic potential". On 30 January, the WHO declared the coronavirus a Public Health Emergency of International Concern. By this point , the outbreak spread by an element of 100 to 200 times.

On 31 January 2020, Italy had its first confirmed cases, two tourists from China. As of 13 March 2020, the planet Health Organization (WHO) considered Europe the active centre of the pandemic. On 19 March 2020, Italy overtook China because the country with the foremost deaths. By 26 March, the us had overtaken China and Italy with the very best number of confirmed cases within the world. Research on coronavirus genomes indicates the bulk of COVID-19 cases in ny came from European travellers, instead of directly from China or the other Asian country . Retesting of prior samples found an individual in France who had the virus on 27 December 2019 and an individual within the us who died from the disease on 6 February 2020.

On 11 June 2020, after 55 days without a locally transmitted case, Beijing reported the primary COVID-19 case, followed by two more cases on 12 June. By 15 June 79 cases were officially confirmed. Most of those patients visited Xinfadi Wholesale Market.