Pertussis is a common disease in the United States, with peaks in cases every 3-5 years. Since the 1980s, there has been an increase in the number of reported cases of pertussis in the United States. There are several reasons that help explain this including increased awareness and reporting, improved testing, increased circulation of the bacteria, under-vaccination of children, under-recognition of mild cases in older adolescents and adults, and waning immunity.
During 2012, the United States had the most reported cases of pertussis since 1955. 2012 was also a peak year for Anoka County; 590 cases of pertussis were reported and investigated, the second highest number of cases in the state of Minnesota. With pertussis naturally cyclic, we are prepared to soon see another peak.
Disease Prevention and Control Public Health Nurses investigate confirmed cases of pertussis in Anoka County residents to help control the spread of the disease.