Key Points

• In Week 22 (May 29–June 4, 2023), emergency room visits and subsequent hospitalizations remained stable across all age groups.

• Due to weather conditions (high temperatures and thunderstorms) and the presence of allergens (pollen, grasses), an increase in visits was observed among both children and adults for:

  • asthma: +54% across all ages, or +1,742 visits—more pronounced among adults (+80%), at levels higher than in previous years;

  • allergies: +26%, or +688 visits;

  • conjunctivitis: +24%, or +455 visits, which remain at a very high level;

  • heatstroke: +52%, or +52 visits (151 visits in S22 versus 99 in S21 and 24 in S20).

• Finally, visits for insect bites were also on the rise among adults (+30%, or +127 visits).

• Specifically among children, there was also a slight increase in visits for ENT conditions (+10% among 2- to 14-year-olds, or +442 visits), isolated fever (+13%, or +347 visits), vomiting (+12%, or +132 visits), gastroenteritis (+14%, or +218 visits), as well as chickenpox (+26%, or +108 visits) and skin conditions among children under 2 years old (+21%, or +53 visits).