Comprehensive news: According to Reuters and Italian "Evening Post" and other media reports, a study recently published by the National Cancer Institute (INT) in Milan, Italy showed that the institute collected blood samples from some residents in September last year. Anti-coronavirus antibodies were detected in. The researchers assumed that the new crown virus had begun to spread in Italy in September 2019, well before the outbreak in Wuhan.
According to the Evening Post, the research report shows that between September 2019 and March 2020, 959 healthy volunteers participated in a lung cancer screening test project and left blood samples. After the outbreak, the researchers tested the remaining blood samples. The study found that 111 people (11.6%) had antibodies to the new coronavirus before February this year.
One of the researchers, Giovanni Apolone (Giovanni Apolone) said, “The samples of these asymptomatic patients not only tested positive in the serum, but also had antibodies that can kill the virus.” Because of the detection of antibodies in these Four of the samples were collected in the first week of October last year, indicating that these people were infected in September.
Giovanni Apron added that this study shows that the new coronavirus can spread in the population for a long time with a low fatality rate. This does not mean that the virus is disappearing, on the contrary it may break out again.
Reuters reported that a new Italian study showed that the new crown virus began to spread in Italy in September last year, well before the outbreak in Wuhan. Compared with the current time of the first case of new crown patients in Italy on February 21, it is also 5 months earlier.
In fact, the traceability of the new crown virus is constantly advancing around the world. At present, studies in many countries have shown that the spread of the new crown virus outside China is earlier than the time of the outbreak of the new crown pneumonia epidemic in Wuhan.
In March of this year, the director of the Mario Negri Institute of Pharmacology and the Italian expert Giuseppe Remuzzi said in an interview with the National Public Radio (NPR) that “there were doctors in the last year In December or even November, a strange pneumonia has been seen, which is very serious, especially for the elderly. This means that before the outbreak in China, the virus may have spread in the northern area of Lombardi, Italy. ."
A report by CNN pointed out that a genetic study in the United Kingdom found that at the end of last year, the new crown virus may have spread globally. After genetic analysis of the virus in thousands of COVID-19 patients, this study believes that the COVID-19 epidemic may begin between October 6 and December 11 last year, the time when the virus entered the human host.
In June of this year, the Spanish “Le Monde” also reported that researchers from the Enterovirus Group of the University of Barcelona in Spain found that there were traces of the new crown virus in the wastewater collected on March 12, 2019. This shows that at least in March 2019. In May, the new crown virus may have begun to spread in Spain.
The Los Angeles Times also reported in September this year that a study by UCLA hospitals and clinics showed that in December 2019, the new crown virus appeared in Los Angeles, thousands of miles away from Wuhan. Researchers speculate that the first case of new coronary pneumonia in the United States may appear earlier than officially confirmed by the United States.
The Washington Post in the United States pointed out that there are many claims about the origin of the new coronavirus and it is difficult to conclude. The detailed evolutionary history of the new coronavirus, the original parasites of the virus, and the transmission mechanism of the first infection from animals to humans all require further comprehensive investigation . The world needs a credible and fair investigation to better prepare for future outbreaks.