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Poliovirus (Types 1, 3) Antibodies, Neutralization, Blood
Polio 1 Titer: <1:8 Polio 3 Titer: <1:8
The presence of neutralizing serum antibodies (titers 1:8 up to >1:128) against polioviruses implies lifelong immunity. Some persons without detectable titers (<1:8) may also be immune as demonstrated by elicitation of a secondary-type serum antibody response upon rechallenge with live polio vaccine.