Summary

• In week 28 of 2017 (July 10–16), emergency department visits for all causes rose slightly among children under 2 years of age (+7%) and remained stable in other age groups.

• For most seasonal summer conditions, a slight increase in visits was observed across one or more age groups. Notable increases included visits for allergies among children (+9%) and adults aged 15–74 (+10%), and for asthma among adults (+11%). There were also more pronounced increases in conjunctivitis among adults (+16%) and children under 2 years of age (+26%), insect bites among adults aged 75 and older (+73%, corresponding to 41 cases), and burns among adults (+17%) and children aged 2–14 (+35%). In contrast, conditions directly related to heat are down across all age groups (-21%). Finally, against the backdrop of a viral meningitis outbreak, there has been a slight increase, tending toward stabilization, in visits for this condition among adults aged 15–74 (+13%, corresponding to 9 cases). Among children, the epidemic peak appears to have been reached in week 26, and visits continued to decline in week 28. The proportions of cases are comparable to those of the previous two years, with the exception of viral meningitis, which remains slightly higher than in the previous two years.

• Among the most common conditions, the most notable are the increase in visits for chickenpox among children under 2 years of age (+60%, or +85 visits) and, within this same age group, the rise in visits for abdominal pain (+24%) and gastroenteritis (+9%). In addition, there was an increase in visits for ENT infections and dermatological and skin problems among children and adults aged 15–74, and for urinary tract infections among adults (+16%).