> You’re correct, no evidence at the time JCVI (joint committee for vaccination and immunisation) made the call. This isn't true, the JCVI did have evidence. I

> You’re correct, no evidence at the time JCVI (joint committee for vaccination and immunisation) made the call. This isn't true, the JCVI did have evidence. In fact their statement showing reasons behind the call said: "There is evidence that a longer interval between the first and second doses promotes a stronger immune response with the AstraZeneca vaccine." https://www.gov.uk/government/publications/prioritising-the-first-covid-19-vaccine-dose-jcvi-statement/optimising-the-covid-19-vaccination-programme-for-maximum-short-term-impact https://www.gov.uk/government/publications/prioritising-the-... (Statement first released on 31st of December 2021, only available via google archive https://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=&cad=rja&uact=8&ved=2ahUKEwjckJWdl8rwAhWrA2MBHWdoAvwQFnoECAcQAA&url=https%3A%2F%2Fwww.cas.mhra.gov.uk%2FViewandAcknowledgment%2FViewAttachment.aspx%3FAttachment_id%3D103741&usg=AOvVaw0WyPYOmGL3JNZoTvBi4q0P https://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&c...)