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Table 1 Number and percentage of persons with antibody concentrations below the protective level

From: Long-term maintenance of diphtheria-specific antibodies after booster vaccination is hampered by latent infection with Cytomegalovirus

  1st vaccination 2nd vaccination
day 0 day 28 day 0 day 28
Tetanus 10 (12%) 0 9 (10%) 0
Diphtheria 55 (65%) 9 (11%) 39 (45%) 6 (5%)
  1. Number and percentage of persons (>60 years) with antibody concentrations below the protective level (≤0.1 IU/ml) before and 4 weeks after vaccination against tetanus and diphtheria. Data are shown for two vaccinations given at a 5-year interval. Data from [21]