When is PCR useful and alternatives later in illness

Pertussis or whooping cough is an acute infectious disease caused by Bordetella pertussis. It is highly contagious, highly serious, and highly preventable.

To find out more about this condition, please do listen to this BMJ Best Practice podcast interview with Professor Sir Andrew Pollard, Director of the Oxford Vaccine Group and Ashall Professor of Infection and Immunity in Oxford.

Competing interests: AP has been chair of JCVI for the past 12 years.

For more on pertussis, visit BMJ Best Practice.