Invasive Group A streptococcal (iGAS) infections are on the rise across Canada, with reported cases reaching a peak not witnessed in more than ten years. This concerning trend has prompted increased vigilance among public health officials, who are working to understand the factors driving the surge and implement effective control measures.
iGAS infections occur when Group A Streptococcus bacteria, commonly responsible for strep throat and scarlet fever, invade deeper tissues and organs. This can lead to severe and potentially life-threatening conditions such as septicemia, necrotizing fasciitis (flesh-eating disease), and streptococcal toxic shock syndrome. While iGAS infections remain relatively rare, the recent increase in cases is raising alarms.
Certain populations appear to be disproportionately affected. A recent study focusing on Toronto and the Peel Region revealed that iGAS incidence is significantly higher among individuals experiencing homelessness (PEH) compared to the general population. The study found iGAS was approximately 70.7-fold more common among PEH than housed persons. Factors such as injection drug use and non-intact skin were also more prevalent among PEH with iGAS.
Health professionals emphasize the importance of early diagnosis and treatment with antibiotics to combat iGAS infections. Symptoms vary depending on the type of infection but can include high fever, severe pain, swelling, redness, dizziness, and confusion. Public health authorities are urging Canadians to practice good hygiene, including frequent handwashing, to minimize the risk of infection and spread.
