Whooping cough, medically known as pertussis, is a highly contagious respiratory infection caused by a specific bacterium. It spreads through airborne respiratory droplets from infected individuals. The primary symptoms involve characteristic, severe coughing fits that can be debilitating and sometimes accompanied by a distinctive "whoop" sound when the individual inhales after a bout of coughing. Although vaccination remains the most effective preventative measure, severe cases can affect various age groups, particularly infants. Treatment focuses on supportive care and reducing the severity of symptoms, while antibiotics may be administered to reduce the bacterial load and prevent secondary complications.