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MSN: COVID Survivors Might Need Only One Shot

MSN.com recently published a Bloomberg story featuring Susan Cheng, MD, MPH, MMSc, director of Public Health Research at the Smidt Heart Institute at Cedars-Sinai, who explained that COVID-19 survivors might develop a robust immune response after just one dose of the two-dose vaccines created by Pfizer-BioNTech and Moderna.

Cheng and her team started tracking more than 1,000 Cedars-Sinai staff members in December to gauge their immune responses to the shots. The investigators found that those who had recovered from COVID-19 mounted as much of a response after a single dose of vaccine as their never-infected colleagues did after two doses.

“We did not expect that this was going to jump out like a smoking gun,” Cheng said in the article.

Her study, published in Nature Medicine, added to a growing body of evidence suggesting that the immune system “remembers” SARS CoV-2, the virus that causes COVID-19. For those who have previously been infected, a single dose acts as a booster and builds enough immunity to protect against future infection.

Giving COVID-19 survivors a single shot could free up 100 million doses worldwide, according to the article. The Centers for Disease Control and Prevention still recommends that COVID-19 survivors get both vaccine doses, guidance that Cheng agrees with for now. But data suggests that one dose could be enough for these patients, and even for others. “I think we’re just at the tip of the iceberg of figuring out who they are,” Cheng said.

Click here to read the complete story on MSN.com.