Oxford Vaccine, Second doses and Blood Clots

We are now looking out for blood clots after the Oxford Vaccine (Astra-Zeneca), around 4 in every millions doses. There is more information in a government leaflet here

We are told these dont develop until after 4 days from the vaccine date (which is after the common 2-3 days of “flu-like” symptoms, which can include headache, temperature and feeling unwell).

There are no reports of clots after a second dose, so we have no concerns recommending the second vaccine dose, even where you felt unwell for 2-3 days afterwards, or are in the younger group of people.

What should I look out for after vaccination?

Although serious side effects are very rare, 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 worse when lying down or bending over or
  • an unusual headache that may be accompanied by:
    • blurred vision, nausea and vomiting
    • diffculty with your speech
    • weakness, drowsiness or seizures
    • new, unexplained pinprick bruising or bleeding
    • shortness of breath, chest pain, leg swelling or persistent abdominal pain