NPR

Could A Single-Dose Of COVID-19 Vaccine After Illness Stretch The Supply?

People who have been sick with COVID-19 may need only one dose of the normally two-shot vaccines. If that became policy it could extend vaccine supplies, but logistical challenges are daunting.
A health care worker draws a dose of Moderna's COVID-19 vaccine into a syringe for an immunization event in the parking lot of the L.A. Mission on Feb. 24.

Public health officials say it's important to vaccinate as many people as quickly as possible to reduce the risk posed by new coronavirus variants. One strategy to stretch existing supplies – albeit with huge logistical challenges — would be to give just one dose of the vaccine to people who have recovered from COVID-19.

About half a dozen small studies, all consistent with one another but as yet unpublished, suggest this strategy could work.

Dr. Mohammad Sajadi, at the University of Maryland medical school's Institute of Human who were just getting their first of two vaccine shots. His research team homed in on those who had previously been diagnosed with COVID-19.

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