Pfizer, Merck Pills Hinge on Biden Plan to Expand Covid Testing

Covid-19 testing expansion could be critical to the success of Merck & Co. and Pfizer Inc.’s newly authorized treatment pills, which require an early diagnosis and administration to effectively reduce the risk of severe cases.

Food and Drug Administration clearance of the first two at-home therapies for Covid-19 addresses some criticisms that the Biden administration’s pandemic response has leaned too heavily on vaccines. But without adequate access to testing, those at higher risk of hospitalization may not be able to obtain the medication in time for it to have a meaningful impact, public health experts say.

“If you can ...