Mutant dangers: AstraZeneca vaccine doesn’t protect against South African COVID variant

Credit: Rafapress/Shutterstock
Credit: Rafapress/Shutterstock

[A] double-blind multicenter study, led by scientists at the South African Medical Research Council Vaccines and Infectious Diseases Analytics Research Unit, studied the safety and the efficacy of the AstraZeneca ChAdOx1 nCoV-19 vaccine in HIV-negative adults aged 18 to 64 who received either two standard doses of the vaccine or a placebo.

Of the 42 total cases of COVID-19, 39 (92.9%) were caused by B1351, for a vaccine effectiveness against this variant of 10.4% (95% CI, -76.8 to 54.8). All 42 cases were mild to moderate, and no patients were hospitalized.

“In this trial, we found that two doses of the ChAdOx1 nCoV-19 vaccine had no efficacy against the B.1.351 variant in preventing mild-to-moderate COVID-19,” the authors wrote. “The lack of efficacy against the B.1.351 variant should be considered in the context of the 75% efficacy (95% CI, 8.7 to 95.5) in preventing mild-to-moderate COVID-19 with onset at least 14 days after even a single dose of ChAdOx1 nCoV-19 vaccine that was observed before the B.1.351 variant emerged in South Africa.”

ADVERTISEMENT

Follow the latest news and policy debates on agricultural biotech and biomedicine? Subscribe to our newsletter.

In early February, South African health officials paused the rollout of AstraZeneca-Oxford vaccine to investigate reports that it offered little protection against mild-to-moderate disease. It switched to using the Johnson & Johnson vaccine to immunize healthcare workers.

Read the original post

Related article:  While teenage medical claims fell during COVID lockdowns, mental health claims jumped by more than 20%
Outbreak Daily Digest
Biotech Facts & Fallacies
Genetics Unzipped
Infographic: Deaths from COVID-19 are far higher than reported estimates

Infographic: Deaths from COVID-19 are far higher than reported estimates

More than 2.8 million people have lost their lives due to the pandemic, according to a Wall Street Journal analysis ...
seralinistud

Gilles-Éric Séralini: Activist professor and face of anti-GMO industry

The French biologist and his research team--funded by the Rodale ...
vandana shiva

Vandana Shiva: ‘Rock Star’ of GMO protest movement has anti-science history

In a 2012 interview, Bill Moyers referred to Vandana Shiva as ...
News on human & agricultural genetics and biotechnology delivered to your inbox.
glp menu logo outlined

Newsletter Subscription

Optional. Mail on special occasions.
Send this to a friend