Factors in infection risk…


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Date: January 05, 2023

01) LINK


“The risk of COVID-19 also varied by the number of COVID-19 vaccine doses previously received. The higher the number of vaccines previously received, the higher the risk of covid infection.

Download free high-res PDFs of the posters, download free copies of my two text books. Any donations using this link help the work of campbell teaching.

https://drjohncampbell.co.uk/

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