Attitudes, acceptance and hesitancy among the general population worldwide to receive the COVID-19 vaccines and their contributing factors: A systematic review.

EClinicalMedicine · 2021 · PMC8411034 · PMID 34490416

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a decreasing trendno p-value reported

The USA longitudinal data mainly report a decreasing trend in willingness to vaccinate over time [ 67 , 68 ].

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