Earlier, American professor George Mason suggested that the president could have had a so-called “viral breakthrough” when the particles of the virus that remained in the body began to multiply again, and the disease continued. Rate the material Истoчник aif.ru “The cough is almost completely gone. Recall that the US president became ill with a coronavirus, it became known on July 21. On July 30, the result of a second test turned out to be positive again. On July 27, Biden came out of quarantine, as the test showed the absence of covid. According to him , cough has almost stopped, other symptoms of coronavirus are absent. His lungs stay clear, — TASS quotes a doctor's statement. However, the president remains in strict self-isolation. US President Joe Biden tested positive for coronavirus again on Friday morning and will continue to be in strict self-isolation, his attending physician, Kevin O'Connor, said. His temperature, pulse, blood pressure, respiratory rate and saturation level remain completely normal. Then he said in social networks that he suffers the disease easily and continues to work.