Can You Get By With Only One Covid Shot?
With virus variants increasing the urgency of getting shots into arms, there are new debates over vaccine dosage and timing. Here’s what you need to know.
Some Covid survivors may have built up enough immunity to skip a booster shot. But should we risk it?
Photographer: David Paul Morris/BloombergSam Fazeli, a Bloomberg Opinion contributor who covers the pharmaceutical industry for Bloomberg Intelligence, answered questions about the wisdom of changing protocols for Covid-19 vaccine dosage as experts in the U.S. and elsewhere weigh tweaks to speed up inoculations ahead of any spread by variants. The conversation has been edited and condensed.
Both the Pfizer Inc.-BioNTech SE and Moderna Inc. vaccines follow two-shot regimens. But research is now showing that one shot may be enough for people previously infected with Covid. Is this true?