Omicron infection just 20 days after Delta—the shortest known gap between infections

Researchers in Spain give details of a 31-year-old woman who caught COVID-19 twice within three weeks, in a case report being presented at this year's European Congress of Clinical Microbiology & Infectious Diseases (ECCMID) in Lisbon, Portugal (23-26 April).

source https://medicalxpress.com/news/2022-04-omicron-infection-days-deltathe-shortest.html