Key Points

• 416,995 possible cases of reinfection identified between March 2, 2021, and January 27, 2022, including 384,375 (92%) since December 1, 2021

• 52% of possible reinfection cases were aged 18 to 40

• 79% of possible reinfection cases for which a screening result was available and interpretable for the reinfection episode had a result suggestive of Omicron (A0C0)