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Delay of 2nd dose of virus from 22 to 84 days after the first

Gray Standen made this Freedom of Information request to The Joint Committee on Vaccination and Immunisation

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Friday 8 January 2021

Dear The Joint Committee on Vaccination and Immunisation,

Regarding the recent decision of the Government to delay the second Covid-19 vaccination

I am 81 years old and have been shielding since March 22nd. I was initially given appointments for the Covid-19 vaccination on 7th and 28th January, which would have been 95% effective against Covid. After my first vaccination I received a sheet saying that the second vaccination could be from 3 to 12 weeks later and that I should wait to hear from my local surgery about timing. This was a huge shock to me as the delay could leave me potentially with only partial protection.

In a telephone conversation this morning with a spokesman from Pfizer Ltd's Medical Information Team, I was told that the 95% effectiveness of the Covid-19 vaccine was only assured if the second vaccination came after 21 days, as reflected in the clinical trials. The spokesperson said that there had been no evaluation of the Pfizer-BioNTech's effectiveness if the second vaccination is given between 22 and 84 days after the first.

It is thus clear that your decision and that of the Government and the Prime Minister will put at great risk the elderly, the very people the government has determined to be extremely vulnerable to catching Covid-19, and anyone else who is given the first dose, but not the second within the vaccine-makers time scale of 21 days.

I ask you, the government and the Prime Minister to reverse that decision, and give all vaccinated people the second dose of Pfizer's Covid-19 within the recommended 21 days, as supported by clinical trials.

Yours faithfully,
Gray Standen (Mrs).
[email address]
07957 633121

Jcvi, The Joint Committee on Vaccination and Immunisation

Thank you for your email which has been noted. The Secretariat are dealing
with a large volume of queries concerning the advice of JCVI on priority
groups for COVID-19 vaccination and will endeavour to respond queries on
this. Your patience is gratefully appreciated.


JCVI continues to work on the consideration and review of vaccines for
COVID-19 and advice for the COVID-19 vaccination programme and will
publish further advice at the appropriate time.


The latest statement concerning JCVIs advice on this is available at:


The JCVI statement on first dose prioritisation is available at:



The latest published minutes of JCVI meetings are available at:


Further detail on the groups considered a priority and eligible for
COVID-19 vaccination in the first phase of the COVID-19 vaccination
programme is available from the Green Book immunisation against infectious
Disease chapter on COVID-19 at:

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