Wuhan, the capital city of China’s Hubei province, where the COVID-19 pandemic originated in December last year, has conducted more than 1 million nucleic acid tests over the past week.
The city recorded a significant drop in the incidence of asymptomatic cases.
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The number of asymptomatic patients who tested positive for the virus fell to 46 people per million tested from 660 per million in April, Efe news quoted the Global Times as saying.
This result suggests, according to local authorities, that the epidemic control situation has improved and that asymptomatics have low infectivity.
According to Global Times, an antibody spot check of 11,000 people in April showed that 5 per cent had antibodies to the virus, which when extrapolated to the city’s 11 million inhabitants could mean that some 500,000 Wuhan citizens had contracted the virus at some point.
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The newspaper points out that, although the study was the initiative of the authorities, the results were not published by official sources, according to which more than 50,000 confirmed cases and 3,869 deaths have occurred in that city, the capital of the central province of Hubei.
Wuhan is currently engaged in a mass-testing campaign for coronavirus, carried out free of charge, which should end on May 25.