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Fig 2 | Immunity & Ageing

Fig 2

From: Booster vaccination against tetanus and diphtheria: insufficient protection against diphtheria in young and elderly adults

Fig 2

Level of protection against tetanus and diphtheria. Tetanus- a and diphtheria- b specific Ab concentrations from young and elderly adults were measured by ELISA. A concentration above 0.1 IU/ml was considered as protective. Frequencies of protected (grey) and unprotected (black) individuals are shown. Plasma samples were collected before (day 0_2010), 4 weeks after (day 28_2010) as well as 5 years after (2015) the booster shot. Chi-squared test was applied for statistical analysis. * x 2 = 4.36 (x2 crit = 3.84)

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