2022 Adult Immunization Schedule Updated for U.S. Adults Aged 19 Years or Older

This publication is a guideline or recommendation report describing changes to the 2022 adult immunization schedule for adults aged 19 years or older in the United States. The report does not specify a study type, phase, or sample size, and no intervention, comparator, or primary outcome is reported. The main result is that changes to the schedule are described, but no effect sizes, absolute numbers, p-values, confidence intervals, or direction of changes are provided. Safety and tolerability data, including adverse events, serious adverse events, and discontinuations, are not reported. Key limitations include the absence of original study data, effect measures, and safety information. The practice relevance is restrained to noting that this report describes schedule changes; clinicians must refer to the complete, authoritative schedule documents for specific vaccine recommendations and implementation details.