jäykkäkouristus ja hinkuyskä (soluton clinical trials

dTap booster vaccination of health care workers (HC dTap)

This study looks at how well a booster jab for diphtheria, tetanus, and whooping cough (pertussis) works in healthcare workers. It checks the levels of protection they have before and after getting the vaccine, focusing on how much immunity the jab provides against these illnesses.