Key Points

Influenza

• Very high activity level for all flu indicators

Bronchiolitis

• Declining activity levels for hospital indicators (<2 years)

COVID-19, acute respiratory infections

• In S02-2025, SARS-CoV-2 circulation decreased to a low level

• Increase in clusters of acute respiratory infections (ARI) in long-term care facilities (LTCFs)

• Description of severe ARI cases in intensive care (Sentinel surveillance)

• Initial estimates of influenza vaccination coverage (as of 11/30/2024)

Acute gastroenteritis

• Low regional activity for acute gastroenteritis in S02-2025