Fig. 3: Escape of Omicron virus from Delta-infection-elicited immunity.
From: Omicron infection enhances Delta antibody immunity in vaccinated persons
Neutralization of Delta compared to the Omicron BA.1 virus by Delta-infection-elicited plasma immunity in vaccinated and unvaccinated participants. A total of 18 samples were tested from n = 14 participants infected during the Delta infection wave in South Africa. The neutralization capacity per participant was determined in two independent experiments, and the numbers and horizontal bars are GMT FRNT50. The fold change was calculated by dividing the larger by the smaller GMT. The dashed line is the most concentrated plasma tested. ****P = 3.2 × 10−7 as determined by a two-sided Wilcoxon rank sum test.
