Cases of reinfection are more found in Omicron variants, experts have said. In a paper published in Nature, researchers have said that the highly contagious Omicron variant of SARS-CoV-2, has significantly increased the number of people reinfected with COVID, unlike previous variants.

from Times of India https://timesofindia.indiatimes.com/life-style/health-fitness/health-news/coronavirus-study-finds-risk-of-reinfection-with-omicron-is-five-times-more-than-other-variants-are-reinfections-milder-how-soon-can-you-get-reinfected/photostory/89661010.cms