People Who Got Moderna's COVID Vaccine Still Had Antibodies 3 Months Later

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Volunteers who were part of the clinical trials for Moderna's coronavirus vaccine had antibodies in their systems months after receiving the vaccine. The new data, which was from Moderna's phase 1 trial, is good news for researchers as they try to determine how long immunization will last in people who are vaccinated.

The researchers found that all 34 healthy patients who received two 100 microgram doses of the vaccine 28 days apart still had antibodies in their system 90 days after the second injection. While the antibody count did drop off a bit, especially in older patients, researchers are optimistic that the vaccine will provide long-term efficacy against COVID-19.

"These data give us further optimism to expect that the high level of efficacy recently demonstrated by mRNA-1273 to prevent COVID-19 disease will be durable," Dr. Tal Zaks, chief medical officer of Moderna, said in a press release.

Moderna's vaccine is more than 94% effective, and the company has applied for an emergency use authorization from the Food and Drug Administration. Moderna said it expects to have 20 million doses available in the United States by the end of the year, with an additional 80 million ready by the end of the first quarter in 2021.

Photo: Getty Images


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