Omicron: Pfizer says COVID pill appears effective against variant

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Pfizer said Tuesday that its experimental COVID-19 pill appears effective against the omicron variant.

The company also said full results of its 2,250-person study confirmed the pill’s promising early results against the virus: The drug reduced combined hospitalizations and deaths by about 89% among high-risk adults when taken shortly after initial COVID-19 symptoms.

Pfizer is also studying its pill in lower-risk adults — including a subset who are vaccinated — but reported mixed data for that group on Tuesday.

In interim results, Pfizer said its drug failed to meet its main study goal: sustained relief from COVID-19 for four days during or after treatment, as reported by patients. But the drug did achieve a second goal by reducing hospitalizations by about 70% among that group, which included otherwise healthy unvaccinated adults and vaccinated adults with one or more health issues. Less than 1% of patients who got the drug were hospitalized, compared with 2.4% of patients who got a dummy pill.

An independent board of medical experts reviewed the data and recommended Pfizer continue the study to get the full results before proceeding further with regulators.

Across both of Pfizer’s studies, adults taking the company’s drug had a 10-fold decrease in virus levels compared with those on placebo.

The prospect of new pills to fight COVID-19 can’t come soon enough for communities in the Northeast and Midwest, where many hospitals are once again being overloaded by incoming virus cases.

Both the Merck and Pfizer pills are expected to perform well against omicron because they don’t target the coronavirus’ spike protein, which contains most of the new variant’s mutations.

The U.S. government has agreed to purchase enough of Pfizer’s drug to treat 10 million people and enough of Merck’s to treat 3 million, pending FDA authorization.

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