It warned of the first drop in 28 years for vaccinations against diptheria, tetanus and pertussis — a marker for immunization coverage — based on preliminary data from the first four months of 2020.
Copyright 2020 NPR
It warned of the first drop in 28 years for vaccinations against diptheria, tetanus and pertussis — a marker for immunization coverage — based on preliminary data from the first four months of 2020.
Copyright 2020 NPR