Cite
MLA Citation
Jennifer Block. “Vaccinating people who have had covid-19: why doesn't natural immunity count in the US?.” BMJ, vol. 374, 2021, p. . http://access.bl.uk/ark:/81055/vdc_100142212070.0x000008
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Jennifer Block. “Vaccinating people who have had covid-19: why doesn't natural immunity count in the US?.” BMJ, vol. 374, 2021, p. . http://access.bl.uk/ark:/81055/vdc_100142212070.0x000008