Table 4.

Interpretation of IgG antitetanus toxin values observed in 100 pre-vaccination and 91 post-vaccination sera, as proposed by the EIA manufacturer.

Concentration mIU/ml	Vaccination protection	Vaccination recommendation	Before vaccination	After vaccination
<= 30	No	Basic immunization	0	0
]30 – 100]	Not surely guaranteed	Booster vaccination	8	0
]100 – 500]	Existent	Booster vaccination	29	2
]500 – 1000]	Sufficient	Control in 2 years	13	4
]1000 – 5000]	Long term	Control in 5–10 years	41	6
> 5000	Extremely high	Control in 10 years	9	79