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Predicted probability of short-term tetanus immunity (≥0.1 IU/mL) (A) and long-term tetanus immunity (≥1.0 IU/mL) (B) based on the adjusted logistic regression model by age group and sex before and after a Meningococcal A Polysaccharide–Tetanus Toxoid Protein Conjugate Vaccine mass vaccination campaign.
