Overdose of yellow fever vaccine: a preventable error?

Notes from the Field: Errors in Administration of an Excess Dosage of Yellow Fever Vaccine — United States, 2017

“…Reports of similar administration errors are rare. Three Brazilian reports involved multidose vials of 17-DD yellow fever vaccine (Bio-Manguinhos, Rio de Janeiro, Brazil) used in mass vaccination campaigns ( 4 – 6 ); 14 health care workers were asymptomatic following receipt of a 25-fold overdose ( 4 ); one person received a 12.5-fold overdose but was lost to follow up ( 5 ); and a 45-day clinical follow up of 49 persons who received a 10-fold overdose identified one child who was hospitalized for evaluation of possible acute viscerotropism and recovered ( 6 ).…”