Summary

• In Week 30 of 2017 (July 24–30), emergency room visits and hospitalizations from all causes declined among children under 15 years of age (by 8% and 8%, respectively) and, to a lesser extent, among adults over 15 years of age (by 3% and 3%, respectively).

• Most seasonal summer illnesses are declining or stable across all age groups. However, there were a few isolated increases involving small numbers of cases (fewer than 10 cases) among people aged 75 and older, specifically for visits due to asthma attacks (+10.5%), conjunctivitis (+9%), and burns (+20.6%). Furthermore, following the increase observed in week 29, heat-related conditions are declining across all age groups in week 30. There is, however, a slight increase in the percentage of hospitalizations following visits, though this applies only to visits for dehydration among children (+10%) and people aged 75 and older (+5%). Finally, the decline in hospitalizations for meningitis continues among adults and children, and the associated activity rates have returned to typical levels for this period.

• Most of the most common conditions are also declining or stable across all age groups. Notable exceptions include a slight increase (+7%) in visits for urinary tract infections among children under 2 years of age (+16.5%) and visits for abdominal pain among children under 2 years of age and people aged 75 and older (+9.4% and +4%, respectively).