Miten tehokkaita eri rokotteet ovat etelä afrikan mutanttia vastaan?

The Oxford/AstraZeneca vaccine offers as little as 10% protection against the Covid variant first seen in South Africa, researchers have suggested

People who have received two doses of the Pfizer vaccine have been found to have strong T-cell responses against the UK and South African variants of Covid, suggesting that the vaccine will continue to protect against serious disease in the coming months.

Early studies found that Moderna's vaccine was less protective against the South African variant, but the company said the observed level of neutralizing antibodies — which can bind to viruses and block them from getting into cells — stayed above protective levels

J&J on näköjään huonompi kuin Novavax mutta estää kaikki vakavat sekin.

Efficacy for both moderate and severe illness varied widely by region. While the U.S. data showed 72 percent effectiveness, that percentage fell to 66 percent globally. And in South Africa, where a worrisome variant is the predominant strain, the effectiveness fell to 57 percent.

Still, "not a single person who got vaccinated, and had illness after four weeks, ended up in the hospital," Dr. Mathai Mammen, global head of pharmaceutical research and development at Johnson & Johnson, told NBC News.