Discussion Despite cross-immunity among a vast majority of the global population [ 15 ], we are witnessing a worrying trend of constant Omicron sublineage re-infection in parallel with waning immunity [ 7 , 16 , 17 ].
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Immunogenicity and Safety of Omicron-Containing Multivalent COVID-19 Vaccines in Unvaccinated and Previously Vaccinated Adults.
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