A sharp decline in routine medical care for low-income children during the coronavirus shutdown could cause long-term harm if not reversed, federal officials warned Wednesday. … dropped precipitously from March through May. … The data, based on an analysis of billing records, come from Medicaid and CHIP, which together cover nearly 40 million low-income children. Among the findings: Early childhood vaccinations declined by 22%, or 1.7 million fewer immunizations for kids up to age 2; time-sensitive screenings for cognitive or developmental problems fell by 44%; even after accounting for increased use of telehealth, there were 6.9 million fewer mental health visits; visits to dentists plunged by 69%.