The Pertussis vaccine is designed to protect against whooping cough, a highly contagious respiratory disease caused by the bacterium Bordetella pertussis. This vaccine is typically given in combination with other vaccines, such as those for diphtheria and tetanus, in a series of shots during childhood. Vaccination is crucial because whooping cough can lead to severe complications, especially in infants. The vaccine helps the immune system recognize and fight the bacteria, reducing the risk of infection. Booster shots are recommended for adolescents and adults to maintain immunity and prevent the spread of the disease.