Effect of the COVID-19 Global Pandemic on Illinois Children Tested for Blood Lead Level and Exposure.

To determine whether the number of children tested for lead exposure and the number of case rates increased (rate ratio [RR] > 1), decreased (RR < 1), or remained stable (RR = 1) during COVID-19 pandemic year 2020 compared with prepandemic year 2019. We analyzed more than 415 000 children's records reported to the Illinois Department of Public Health in 2019 and 2020 by demographic characteristics. The testing rate was the number of children tested yearly per population.