Omicron subvariants BA.4 and BA.5 appear to escape antibody responses among both people who had previous Covid-19 infection and those who have been fully vaccinated and boosted, according to new data from researchers at Beth Israel Deaconess Medical Center, of Harvard Medical School.

(SOURCE) https://www.cnn.com/2022/06/22/health/ba4-ba5-escape-antibodies-covid-vaccine/index.html