Key Points

• In Week 04 (January 20–26, 2025), emergency room visits and hospitalizations following visits continued to rise among children (+13%, or +11,710 visits, and +12%, or +1,021 hospitalizations). They remained stable among adults.

• Visits for influenza/flu-like illness are increasing across all age groups (+31%, or +4,349 visits): they account for 10% of activity among children (the highest percentage of activity in the past three years). Other respiratory indicators also continue to rise among children, and to a lesser extent among those aged 15–74. Notably, there has been an increase in visits for: acute bronchitis (+31%, or +92 visits among children, and +13%, or +174 visits among those aged 15–74), upper respiratory tract conditions (+20%, or +1,937 visits among children, and +8%, or +252 visits among those aged 15–74), pneumonia (+19%, or 107 cases, among children), and asthma attacks (+20%, or 625 visits, all ages). Finally, among children under 2 years of age, there was a moderate increase in visits for bronchiolitis compared to the previous week (+6%, or 94 visits).

• Among other indicators, there was an increase in visits related to digestive conditions across all age groups: acute gastroenteritis (+12%, or 565 more visits), vomiting (+14%, or 434 more visits), and abdominal pain (+10%, or 1,581 more visits).There was also an increase in visits for general malaise across all age groups (+9%, or +1,065 visits); among adults for chest pain (+10%, or +1,185 visits), dyspnea/respiratory failure (+9%, or +425 visits), and cardiac decompensation (+9%, or +157 visits, among those aged 75 and older); among children for isolated fever (+15%, or 751 visits), and for conjunctivitis among those aged 2–14 (+30%, or 54 visits).