A positive test result shows you may have antibodies from an infection with the virus that causes COVID-19. However, there is a chance that a positive result means you have antibodies from an infection with a different virus from the same family of viruses (called coronaviruses).
The coronavirus that has exploded into a pandemic has almost certainly been circulating for several months longer than public health experts first suspected, masked by asymptomatic cases or illnesses incorrectly diagnosed.
该文只是认为病毒可能早就从武汉传到了美国。“It wouldn't surprise me if it was here in December. There was so much connection between Wuhan and here, I'd be surprised if it wasn't,”
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