Invasive group A streptococcal (iGAS) surveillance in Island Health, British Columbia, 2022.

Background: Invasive group A streptococcal disease (iGAS) is caused by group A bacteria. In 2022, multiple disease alerts for iGAS in the Island Health region, in the context of increased infections in the paediatric population in Europe and the United States, prompted further investigation into local trends. This surveillance study summarizes epidemiological trends of iGAS in the region covered by Island Health, a regional health authority in British Columbia, in 2022.