Pertussis found in one fifth of vaccinated children

In a study of 279 children aged 5-15 years who presented with a persistent cough, defined as lasting two to eight weeks duration, to 22 general practices in the Thames Valley in the UK, researchers from the University of Oxford and Public Health England found 56 children had evidence of recent pertussis infection, including 39 of the 215 children who were fully vaccinated against whooping cough

# Tags