Seroprevalence of anti-diphtheria toxoid antibody and implications for vaccination policy in Vietnam's South-central coast: a cross-sectional study.

BMC Infect Dis · 2024 · PMC11318120 · PMID 39134980

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a decreasing trendno p-value reported

A decreasing trend has also been observed in several previous studies in Vietnam, with a decrease in the antibody level by age despite the vaccination history [ 8 , 17 ].

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