symptoms of TTS most commonly develop 4 to 42 days after vaccination.The low level of blood platelets can potentially cause bleeding. TTS can occur at different parts of the body, including the brain and in the abdomen (belly). It is different from more common types of blood clots. TTS involves blood clots (thrombosis) together with low levels of blood platelets (thrombocytopenia). Thrombosis with thrombocytopenia syndrome (TTS) Rare side effects after the AstraZeneca vaccine were severe allergic reaction (anaphylaxis), a specific type of blood clots called thrombosis with thrombocytopenia syndrome (TTS), myocarditis and pericarditis. They are more common after the first dose of the AstraZeneca vaccine. Most side effects are mild and go away within 1 to 2 days. Less common side effects after AstraZeneca vaccine include: It was given to millions of people around the world.Īs with any vaccine, you may have had some temporary side effects after receiving the AstraZeneca vaccine. This showed that your immune system was working.Ĭommon side effects after the AstraZeneca vaccine include: Common side effectsĪstraZeneca was a very safe vaccine. You can read the full Vaxzevria Consumer Medicine Information document on the TGA site for more details (click 'I accept' to see the PDF). The AstraZeneca vaccine did not contain any live virus, and it could not give you COVID-19. Your immune cells then recognise the spike protein as a threat and begin building an immune response against it. Once this enters the body, it tells your cells to make copies of the spike protein. The AstraZeneca vaccine used a harmless, weakened animal virus (called a viral vector) that contains the genetic code for the coronavirus spike protein. If you have had COVID-19, you should wait to be vaccinated with a COVID-19 vaccine 6 months after your confirmed infection. MRNA vaccines (Pfizer or Moderna) are the preferred vaccines for booster doses, regardless of which vaccine was used for the primary course. Booster dosesĪstraZeneca was also used as a booster dose in people aged 18 years and older. Most people had their second dose 12 weeks after their first, but it may have been less time in certain situations. Dose schedule Primary courseįor most people the AstraZeneca primary course is 2 doses, 4 to 12 weeks apart. This was based on the higher risk and observed severity of a rare side effect called thrombosis with thrombocytopenia (TTS) after receiving AstraZeneca in people aged under 60 years compared with people aged 60 years or older. Pfizer, Moderna, or Novavax COVID-19 vaccines were preferred over AstraZeneca for people aged under 60 years. The TGA provisionally approved for use in Australia as a booster on 8 February 2022. The TGA provisionally approved it for use in Australia as a primary course on 15 February 2021. The information on this page is for those that have previously received a primary course and/or booster dose of AstraZeneca.ĪstraZeneca was approved for use as a primary course and booster dose in people aged 18 years and over. On this page Approval for use in Australiaįrom Tuesday 21 March 2023 Vaxzevria (AstraZeneca) is no longer available.
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