Moderna study shows its COVID-19 vaccine holds up against several variants after six months

Vials with Covid-19 Vaccine stickers attached and syringes with the logo of U.S. biotechnology company Moderna.

Justin Tallis/AFP via Getty Images

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Moderna Inc. shares ticked higher in the extended session Thursday afetr the biotech drug company said a study showed its COVID-19 vaccine held up against several variants of the virus that causes the disease.

The study was tested against SARS-CoV-2 variants that included alpha, beta, gamma, delta epsilon, and iota, Moderna MRNA, +1.58% said. While the patients given two doses of Moderna COVID-19 vaccine had some “waning in antibody levels,” the majority had enough antibodies to neutralize the virus at the six-month mark, the company said.

“These data support the durable efficacy of 93% seen with the Moderna COVID-19 vaccine through six months,” said Stéphane Bancel, chief executive of Moderna, in a statement. 

“We expect that these data and the growing body of real-world evidence will help inform health regulators’ approaches to how and when to administer additional boosting doses,” Bancel said.

Shares rose 0.7% after-hours, following a 1.6% rise in the regular session to close at $391.42. The stock is up 463% over the past 12 months, compared with a 32% gain on the S&P 500 index SPX, +0.30%.

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