adjective
- of, relating to, or caused by whooping cough (pertussis)
Usage: medical; formal
Examples
- The pertussal vaccine protects infants from whooping cough.
- Pertussal symptoms can persist for several weeks after infection.
- The doctor diagnosed a pertussal infection based on the characteristic cough.
- Pertussal immunity wanes over time, requiring booster shots in adulthood.