The Omicron variant of Covid is able to evade the immunity of vaccinated individuals at a much faster pace than compared to the Delta variant.
That's according to a Danish study of nearly 12,000 households conducted by researchers from The University of Copenhagen, Statistics Denmark, and Statens Serum Institut.
Not only does Omicron spread faster among those fully vaccinated, but the study also indicates it spreads even faster among those who have received booster shots. Omicron appears to have a strong ability to escape previous immunity; regardless of a natural infection or vaccine-induced protection.
Key findings from Danish researchers:
Comparing households infected with the Omicron to Delta VOC (variant of concern), we found an 1.17 times higher SAR (secondary attack rate) for unvaccinated, 2.61 times higher for fully vaccinated and 3.66 times higher for booster-vaccinated individuals, demonstrating strong evidence of immune evasiveness of the Omicron VOC...
The Omicron VOC has been reported to be three to six times as infectious as previous variants, with a short doubling time, including early estimates from countries with a high vaccination coverage indicating doubling times of 1.8 days (UK), 1.6 days (Denmark), 2.4 days (Scotland) and 2.0 days (United States).Researchers from University of Copenhagen, Statistics Denmark, and Statens Serum Institut
Omicron is now said to be circulating in almost 90 countries and has reportedly become the dominant variant in the United States. However, scientists say the strain is causing much milder disease and symptoms, and fewer hospitalizations among those infected.