1.
Emerg Infect Dis
; 29(1): 184-188, 2023 01.
Article
in English
| MEDLINE
| ID: mdl-36454718
ABSTRACT
Since June 2020, the SARS-CoV-2 Immunity and Reinfection Evaluation (SIREN) study has conducted routine PCR testing in UK healthcare workers and sequenced PCR-positive samples. SIREN detected increases in infections and reinfections and delected Omicron subvariant waves emergence contemporaneous with national surveillance. SIREN's sentinel surveillance methods can be used for variant surveillance.