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Germs: Understand and protect against bacteria, viruses and infections

When to seek medical care

Seek medical care if you suspect that you have an infection and you have had:

  • An animal or a human bite.
  • Trouble breathing.
  • A cough for more than a week.
  • Rapid heartbeat.
  • A rash, especially if it's with a fever.
  • Swelling.
  • Blurred vision or other trouble seeing.
  • Vomiting that doesn't stop.
  • An unusual or severe headache.

Your healthcare professional can do diagnostic tests. Tests can show whether you have an infection, how serious the infection is and how best to treat it.