Influenza and Respiratory Virus Surveillance, Vaccine Uptake, and Effectiveness at a Time of Cocirculating COVID-19: Protocol for the English Primary Care Sentinel System for 2020-2021.
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JMIR Public Health Surveill. 2021 Feb 19;7(2):e24341. doi: 10.2196/24341.
JMIR Public Health Surveill. 2021.
PMID: 33605892
Free PMC article.