Whooping cough is a very contagious illness of the gas exchange system, caused by the bacterium Bordetella pertussis. Which method gives infants protection against whooping cough and lowers the likelihood of developing this disease later?
- AA short course of more than one type of antibiotic.
- BA six-month course of one type of antibiotic.
- CInjections of antibodies specific to Bordetella pertussis.
- DInjections of antigens from Bordetella pertussis bacteria.