Summary

• In week 27 of 2017 (July 3–9), emergency room visits for all causes and hospitalizations remained stable across all age groups.

• In week 27, there was an increase in visits for most seasonal and summer-related conditions. In particular, there was a sharp increase in conditions directly linked to heat among children (+120%, corresponding to +112 visits) and those aged 15–74 (+38%, corresponding to +137 visits), driven mainly by the rise in hyperthermia diagnoses (+183% across all ages). We also observe, among children and adults aged 15–74, an increase in visits for insect bites (+55% and +45%, respectively), burns (+16% and +15%, respectively), and, to a lesser extent, allergies (+8% and +9%, respectively). These conditions are stable or declining among people aged 75 and older. Furthermore, there was a slight increase in visits for isolated fever and malaise among adults aged 15 and older (+5% and +7%, respectively) and for asthma (+9%) and conjunctivitis (+18%) among children.Finally, among children under 2 years of age, there has been a doubling of emergency room visits for enterovirus meningitis, whereas the trend is generally downward in other age groups. The share of activity for these conditions is comparable to that of the previous two years, with the exception of viral meningitis, which remains higher than in the previous two years

• Among the most common conditions, there was an increase in visits for urinary tract infections (+24%) among 2- to 14-year-olds and in visits related to alcohol consumption among 15- to 74-year-olds.