Vaccination

• What happens to our immune system after exposure to a pathogen?

  It generally develops immunity to that pathogen
• Why do we only catch chickenpox once?

  Because we develop immunity after the first infection
• What is the benefit of vaccines in relation to disease exposure?

  They provide immunity without catching the disease
• What do vaccines contain?

  Weakened or inactivated pathogens
• How does the body respond to the antigens in vaccines?

  It produces antibodies and develops immunity
• How many diseases are we vaccinated against by primary school?

  More than a dozen diseases
• What is the main pro of vaccines?

  They protect us from catching horrible diseases
• What larger scale effect do vaccines have on diseases?

  They help control diseases that were common
• What is herd immunity?

  When enough people are immune to a pathogen
• How does herd immunity prevent disease spread?

  The pathogen has no hosts to spread to
• What happens to a pathogen when the host overcomes the disease?

  The pathogen disappears if there are no hosts
• What is a common problem with vaccines?

  They don't always grant full immunity
• What do we check after receiving important vaccines?

  If the vaccine has been effective
• What are some common reactions to vaccines?

  Swelling, fevers, or seizures
• How common are bad reactions to vaccines?

  They are pretty rare
• How common are severe reactions to vaccines?

  They are super rare