Bordetella pertussis is a bacterium that causes whooping cough, a highly contagious respiratory disease. It primarily affects the airways, leading to severe coughing fits that can make it difficult to breathe. The infection is especially dangerous for infants and young children, who may experience complications. Vaccination is the best way to prevent whooping cough. The DTaP vaccine, which protects against diphtheria, tetanus, and pertussis, is recommended for children. Adults can also receive a booster shot, known as Tdap, to maintain immunity and help protect vulnerable populations.