The logistic regression analysis also indicated that there was an extremely significant positive correlation between influenza vaccination coverage and the COVID-19 pandemic at the beginning of the COVID-19 pandemic (aOR = 12.71, 95% CI: 12.51–12.91).
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Influenza Vaccination Coverage Among Elderly Patients with Chronic Lung Respiratory Disease in Ningbo, China: Impact of Free Vaccination Policies and the COVID-19 Pandemic.
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