Letter: Failure of measles vaccination.
D002644:Chickenpox / Q000276:immunology; D006801:Humans; D007223:Infant; D008297:Male; D008457:Measles / Q000276:immunology / Q000517:prevention & control*; D008458:Measles Vaccine; D013997:Time Factors; D014611:Vaccination
D008458:Measles Vaccine