Antibody Response to Pertussis Vaccine Among Children and Adolescents in Croatia: A Cross-Sectional Prevalence Study.

Vaccines (Basel) · 2025 · PMC11946094 · PMID 40266197

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a negative trendno p-value reported

However, a rapid decline in the GMC of IgG-anti-PT was observed in older age groups, with a negative trend up to 14–15 years of age.

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