Under-reporting of pertussis in Ontario: A Canadian Immunization Research Network (CIRN) study using capture-recapture

Understanding the epidemiology of pertussis requires timely, reliable, and accurate surveillance data, but under-diagnosis and under-reporting of pertussis cases are longstanding challenges, compromising the ability to accurately estimate the burden of disease. Researchers aimed to estimate the true number of pertussis cases in Ontario separately in infants and those aged one year and over, and evaluate the completeness of each data source through a three-source capture-recapture data analysis.