Summary

• In week 23 of 2017 (June 5–11), emergency department visits and hospitalizations for all causes were down slightly across all age groups (-3% for visits and -4.4% for hospitalizations). Visits have returned to levels similar to those of the previous two years.

• Seasonal spring and summer conditions are mostly on the decline, with the exception of emergency room visits for: - viral meningitis, both among children (+12.5%, i.e., +6 visits) and adults (+42%, i.e., +18 visits), with the proportion of these visits among coded cases exceeding levels from the previous two years, - animal and insect bites/contact, also up 19% among children and 9.1% among adults aged 15–74 (down among those aged 75 and older). The proportion of these visits within the coded activity is higher than in the two previous years during this period, - conjunctivitis, up only among those aged 75 and older (down among children and adults aged 15–74). The proportion of conjunctivitis cases in overall activity returned to normal levels among children, following a sharp increase over the previous two weeks - burns, up 10% among children under 2 years of age.

• The most frequently seen conditions in emergency departments (excluding seasonal conditions) are mostly stable or declining across all age groups, with the exception of visits for abdominal pain among children under 2 years of age (+7%) and visits for stroke among adults aged 75 and older (+6%).