These diseases used to strike thousands of children each year. Today there are relatively few cases, but outbreaks still occur each year because some babies are not immunized. Except where noted, these diseases spread when viruses or bacteria pass from an infected person to the nose or throat of others. This serious disease is spread by bacteria or germs.
Diphtheria can cause blockage of the airway, making it impossible to breathe.
It can also cause heart problems. Three of 10 people who get tetanus die from the disease. Pertussis is caused by bacteria. It can cause spells of violent coughing and choking, making it hard to breathe, drink, or eat. The cough can last for weeks.