COVID-19 time line rewrite!

The researchers believe that the time of this case is obviously earlier than the official confirmation time of the first new crown case in Italy

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It is speculated that there may be new crown cases in Italy and some other European countries by the end of autumn 2019

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The new study speculates that there may be individual cases of new coronavirus infection in some parts of the United States in December 2019

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In December last year, another group of researchers from the University of Milan reported in the US journal of new infectious diseases that they tested 39 oropharyngeal swab samples collected between September 2019 and February last year from patients suspected of measles but eventually negative for measles

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This means that the new coronavirus may have existed in Barcelona at that time, which is much earlier than the time when the first confirmed case of new coronavirus was reported in the world

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On November 30 last year, researchers from the United States Centers for Disease Control and prevention reported in the semi monthly journal of clinical infectious diseases that there were antibodies against new coronavirus in some American blood donation samples in December 2019, which means that the new coronavirus may have appeared in the United States at that time, earlier than the time when the first confirmed case of new coronavirus was officially reported in the United States

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The genetic material of the new coronavirus may enter the waste water from the excrement of the infected person

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The researchers sequenced the gene of the virus and found that the genome sequence of the virus strain was 100% the same as the reference sequence of the new coronavirus in Wuhan

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In this study, CDC researchers tested 7389 blood samples collected by the American Red Cross between December 13, 2019 and January 17, 2020 from blood donors in nine states

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Another possibility is that a small number of people already have antibodies that can bind to the new coronavirus

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The University of Barcelona in Spain issued a communique on June 26 last year, saying that a research team led by the University analyzed the wastewater samples from January 2018 to December 2019, and found that the nucleic acid test of the wastewater samples collected on March 12, 2019 was positive, but the virus level was very low

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Janotti, from the University of Milan and the leader of the research team, told the media that in the next study, new coronavirus infection samples may be found earlier than November 2019

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It was found that a 4-year-old boy living around Milan, Italy, was positive for new coronavirus

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This is about two months earlier than the first new crown case reported in the Americas, and about three months earlier than the first new crown case reported in Brazil

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The results showed that 106 blood samples contained antibodies to NCV, 39 of which were collected from California, Oregon and Washington from December 13 to December 16, 2019, and 67 from Massachusetts and Michigan from December 30, 2019 to January 17, last year

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This oropharyngeal swab sample was collected on December 5, 2019, before which the boy had no travel history

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The Federal University of Santa Catarina in Brazil published a research report on July 2 last year, saying that a research team led by the University detected the genetic material of the new coronavirus in wastewater samples collected on November 27, 2019 in Florianopolis, the capital of Santa Catarina

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However, researchers in Spain found traces of new coronavirus in wastewater samples collected on March 12, 2019

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Source: Party member wechat comprehensive from Xinhua international headlines, CCTV news editor: Yao Runping editor: Chen Weiping Zhang Bin.

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The Italian Institute of higher health published a communique on June 18 last year, saying that the new coronavirus may have appeared in northern Italy in December 2019

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Spain reported its first confirmed case of new coronavirus on January 31 last year and its first local case on February 25 last year

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It is not only found the clue of earlier new coronavirus infection in human body, but also showed that the new coronavirus may have existed for a long time

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The epidemiological study based on the waste water is helpful to better understand the transmission of the virus

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According to the communique, experts from the environmental and water quality monitoring departments of the Institute analyzed 40 municipal wastewater samples collected from October 2019 to February last year, and the results showed that the genetic material of the new coronavirus was detected in the wastewater collected from Milan and Turin on December 18, 2019

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Recently, many countries have made some new discoveries about early COVID-19, which triggered the academic community’s new thinking on the origin and spread of COVID-19

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In Italy, the first confirmed case of the new crown was reported on January 30 last year, and the local case was reported on February 21 last year

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He said that the study found that some cases of COVID-19 infection only showed skin symptoms, so they wanted to know whether any of the skin patients before the outbreak of COVID-19 had been infected with COVID-19

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The first confirmed case of the new crown was reported in the United States on January 21 last year

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An international research team led by the University of Milan in Italy reported in the British Journal of dermatology that they found the new coronavirus gene sequence from a biopsy sample of a young female patient with skin disease in the country on November 10, 2019

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This result will advance the appearance of “patient zero” in Italy to November 2019 again

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In addition to Spain, researchers in Brazil and Italy also found traces of the new coronavirus in wastewater samples before the earliest confirmed cases were reported locally

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