Concept of how long immunity will last for each covid-19 vaccine type after vaccination.Illustration of different types of covid-19 vaccines; mRNA, DNA, viral vector, spike protein, weakened or killed virus vaccines and a clock premium vector by srikijt

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background illustration health medicine illness care time watch clock symbol concept injection bottle therapy treatment disease biology science immunization virus dose syringe vaccine flu research last immunity dna duration vaccination epidemic pandemic immune weakened Antibody Adenovirus virology mrna coronavirus how long spike protein covid 19 sars cov 2 messengerrna viralvector

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