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Covid-19: No evidence that vaccines can affect fertility, says new guidance

BMJ 2021; 372 doi: https://doi.org/10.1136/bmj.n509 (Published 19 February 2021) Cite this as: BMJ 2021;372:n509

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Rapid Response:

“Absence of evidence is not evidence of absence” [1]

Dear Editor

This article [2] leaves it unclear who has said what and on what basis. However, the medium/long term effects of any of these products are surely largely unknown, so there is perhaps little reassurance there will be no adverse consequences across a wide variety of outcomes, and care must still be taken what people are told about this.

[1] D G Altman, J M Bland,’ Absence of evidence is not evidence of absence’, BMJ 1995 Aug 19;311(7003):485. doi: 10.1136/bmj.311.7003.485.

[2] Gareth Iacobucci, ‘ Covid-19: No evidence that vaccines can affect fertility, says new guidance’, BMJ 2021; 372 doi: https://doi.org/10.1136/bmj.n509 (Published 19 February 2021)

Competing interests: AgeofAutism.com, an on-line daily journal, concerns itself with the potential environmental sources for the proliferation of autism, neurological impairment, immune dysfunction and chronic disease. I receive no payment as UK Editor. I also moderate comments for the on-line journal ‘The Defender’ for which I am paid.

20 February 2021
John Stone
UK Editor
AgeofAutism.com
London N22