Pfizer v AstraZeneca


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A Public Health England analysis of the COVID-19 vaccine has shown:

Two doses of the AstraZeneca vaccine was about 92 per cent effective against hospitalisation from the Delta variant.

Two doses of the Pfizer vaccine was about 96 per cent effective against hospitalisation from the Delta variant.

Single dose effectiveness is not so close, between the two.

One dose of the AstraZeneca vaccine was about 71 per cent effective against hospitalisation from the Delta variant.

One dose of the Pfizer vaccine was about 94 per cent effective against hospitalisation from the Delta variant.


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Effectiveness of COVID-19 vaccines against hospital admission with the Delta (B.1.617.2) variant

2 thoughts on “Pfizer v AstraZeneca”

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  1. If you feel like sending $5 to buy me a cup of coffee, please click the donate button.
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  2. AstraZeneca vaccine (NOT an mRNA vaccine)

    The 1st AstraZeneca vaccine in Australia was given on 5th March 2021.
    https://www.abc.net.au/news/2021-03-05/first-astrazeneca-covid-vaccine-in-australia-murray-bridge/13218604

    TGA Report 26 August 2021.
    To 22 August 2021, approximately 8.8 million doses of the AstraZeneca vaccine have been administered in Australia.
    The total Australian reports assessed as TTS following the Vaxzevria (AstraZeneca) vaccine to 116 cases (67 confirmed, 49 probable) from approximately 8.8 million vaccine doses.
    To date, 6 deaths have been assessed as related to TTS – 5 of the 6 deaths occurred in women aged 34, 48 (2 cases), 52 and 72-years-old. The other death was in a 44-year-old man.

    To 22 August 2021, the TGA has received 56 reports of suspected ITP following vaccination.
    To date, 1 deaths have been assessed as related to ITP. An external Vaccine Safety Investigation Group (VSIG), convened by the TGA on 2 July 2021, concluded that a very rare but fatal case of immune thrombocytopenia (ITP) in a 61-year-old woman who had received the AstraZeneca vaccine was likely to be related to immunisation.

    Pfizer (An mRNA vaccine)

    The 1st Pfizer vaccine in Australia was given on 22 February 2021.
    https://www.abc.net.au/news/2021-02-22/australia-begins-rollout-of-pfizer-covid-19-vaccinations/13167986

    TGA Report 26 August 2021.
    To 22 August 2021, approximately 8.2 million doses of Comirnaty (Pfizer) have been administered in Australia.
    To 22 August 2021, we have received 235 reports of suspected myocarditis and/or pericarditis following vaccination with Comirnaty (Pfizer). These reports reflect the observations of the people reporting them and have not been confirmed as having been caused by the vaccine. Some events may be coincidental and would have happened anyway, regardless of vaccination.
    No deaths have been reported.

    Since the beginning of the national roll-out of COVID-19 vaccines in February 2021, over 2 million surveys have been completed by Australians who have received a vaccine as part of AusVaxSafety’s active COVID-19 vaccine surveillance program.

    Source: https://www.tga.gov.au/periodic/covid-19-vaccine-weekly-safety-report-26-08-2021

  3. Professor Lewin, director of The Doherty Institute, talking about AstraZeneca, said “We know it’s a good vaccine, and we’ve got lots of it“.
    “It reduces the risk of hospitalisation by 75% after the first dose, and by 95% after the second.”

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