The vaccine effectiveness (VE) of at least 2 doses of CoronaVac for preventing symptomatic COVID-19, being hospitalized for COVID-19, and respiratory failure due to COVID-19 was estimated to be 31.7%, 81.1% and 87.2% respectively ( Table 3 ). BNT162b2 reduced the risk of symptomatic COVID-19 with borderline significance at univariate analysis while it was significant at multivariate analysis after adjusting for confounders.
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Efficacy of mRNA and Inactivated Whole Virus Vaccines Against COVID-19 in Patients with Chronic Respiratory Diseases.
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