Drugmaker Pfizer is currently testing a single pill cure for COVID-19, and if all goes well, the drug could be available this year. The drug, called PF-07321332, is currently in a Phase One clinical trial with healthy adults. According to the Telegraph, the protease inhibitor may be available as soon as this year. The pill was unveiled at the American Chemical Society Spring 2021 meeting in early April. The drug works by targeting the main protease of SARS-CoV-2, the virus that causes COVID-19. By inhibiting the protease, the drug prevents the virus from reproducing itself within the body. CDC changes...