Conclusion
In a wide range of people, pertussis symptoms may extend for up to four weeks or longer. If treated early, most adults and children recover quickly without significant complications. Hence, it’s crucial to call for medical help when pertussis symptoms are noticed in infants, young children, and adults.
References:
[1] https://www.cdc.gov/vaccines/pubs/pinkbook/pert.html
[2] https://www.cdc.gov/pertussis/downloads/pertuss-surv-report-2016.pdf
[3] https://www.cdc.gov/pertussis/about/signs-symptoms.html
[4] https://www.cdc.gov/pertussis/about/diagnosis-treatment.html