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Pertussis, or Whooping Cough, is a bacterial infection that causes violent, uncontrollable coughing and difficulty breathing. It is sometimes called the 100-day cough for its long-lasting effects. Pertussis can affect anyone but is extremely serious and sometimes deadly for babies…

Protection against disease when you are given another person or animal’s antibodies, or manufactured antibodies. While passive immunity takes effect immediately it is not as strong or long lasting as active immunity. For example, a mother’s antibodies are passed to…

A worldwide epidemic (e.g., COVID-19)