According to US media reports, Anthony & Middot, Director of the National Institute of Allergic and Infectious Diseases and Chief Medical Consultation of the White House; Noshi's new crown positive at the beginning of the month, and then received the treatment of Pfizer antiviral oral administration. Yang "".

Fitch is 81 years old. Previously, the symptoms were very mild, only feeling fatigue and nasal congestion.

The doctor considers his age, and prescribed Paxlovid, Pfizer's antiviral oral administration,After five days of taking the new crown detection, the new crown test was negative and negative for three consecutive days.

But on the fourth day of the test, the results became positive.

Fitch told the media,The day after "Fuyang", he began to feel "very uncomfortable", "worse than the first (positive)".

It is reported that Paxlovid, the antiviral oral medication of Pfizer Company, is authorized to be used in patients with mild and moderate new crown pneumonia in the United States.More and more people appear "Fuyang" after taking, that is, within 2-8 days after recovery, the symptoms of new crown pneumonia recur, or virus testing is positive again.

The U.S. Centers for Disease Control (CDC) has asked doctors to pay special attention to this phenomenon, but it is also said that it has nothing to do with reusing Pfizer's oral medication or vaccination, which may be part of the "natural history" of the new crown virus.