(FILES) In this file photo taken on April 26, 2016, the Pfizer company logo at Pfizer’s headquarters in New York. – Pfizer said on November 5, 2021 that a clinical trial of its pill to treat Covid-19 had shown it is highly effective. Pfizer’s is the second anti-Covid pill after that of Merck, which is actually an influenza medicine rebranded to fight the coronavirus. Pfizer’s has been created specifically to fight Covid. (Photo by Don EMMERT / AFP)