pfizer inc pfe said it will sell an additional 10 million treatment courses of its oral therapy paxlovid to treat covid19 to the us government this year that doubles the total amount of courses contracted by the us government to 20 million with 10 million courses to be delivered by the end of june and the rest to be delivered by the end of september meanwhile pfizers stock sank 29 in afternoon trading with the omicron variant surging the availability of and accessibility to treatment options is of utmost importance as millions of people are being diagnosed with covid19 each and every day said pfizer chief executive albert bourla with data showing significant reductions in hospitalizations and deaths along with the potential for paxlovid to maintain robust antiviral activity against omicron we believe this therapy will be an important tool in the fight against covid19 pfizers stock has still run up 297 over the past three months while the sp 500 spx has gained 114