Pfizer Covid-19 Pill 89 Percent Effective in Final Analysis of Key Study at Preventing Hospitalization and Death

Pfizer's Covid-19 pill named Paxlovid maintained 89 percent effectiveness at reducing hospitalization and death, a result deemed game-changing in the fight against the global pandemic.

The results, which also gave encouraging signs of Paxlovid's effectiveness against the Omicron variant, is expected to inform Covid-induced decision-making by governments around the world, with matters such as restrictions, mandates and lockdowns being impacted.

Pfizer announced its findings by way of press release Tuesday. The announcement will weigh on the Food and Drug Administration's decision to approve Paxlovid for use in high-risk adults, which the federal authority has been reviewing. An approval could come before the end of December.

Relative to the drug's effectiveness against the Omicron variant, researches had early signs of success because Paxlovid stops the virus by blocking the activity of a key enzyme, known as protease, that the virus needs to replicate. This enzyme isn't believed to have been mutated in Omicron.

“This news provides further corroboration that our oral antiviral candidate, if authorized or approved, could have a meaningful impact on the lives of many, as the data further support the efficacy of Paxlovid in reducing hospitalization and death and show a substantial decrease in viral load. This underscores the treatment candidate’s potential to save the lives of patients around the world,” said Albert Bourla, chairman and chief executive officer of Pfizer. “Emerging variants of concern, like Omicron, have exacerbated the need for accessible treatment options for those who contract the virus, and we are confident that, if authorized or approved, this potential treatment could be a critical tool to help quell the pandemic.”