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What should I look out for after vaccination?

Serious side effects are very rare, but if you experience any of the following from around 4 days to 4 weeks after vaccination you should seek medical advice urgently.

  • A new, severe headache which is not helped by usual painkillers or is getting worse
  • A headache which seems to get worse when lying down or bending over
  • An unusual headache that may be accompanied by:
    • Blurred vision, nausea and vomiting
    • Difficulty with your speech
    • Weakness, drowsiness or seizures
  • New, unexplained pinprick bruising or bleeding
  • Shortness of breath, chest pain, leg swelling or persistent abdominal pain