Flu a and b test: the new crown epidemic in the United States may be underestimated or re-emerged. Recently, the new crown epidemic in the United States seems to be in a plateau, but epidemiologists said that factors such as incomplete epidemic data statistics may seriously underestimate indicators such as the number of daily confirmed cases in the United States.
Apa rapid test antigen: how are those countries that are "lying flat" fighting the epidemic. It is expected that outbreaks will continue to occur everywhere, especially in those areas where measures to prevent transmission have been lifted.
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