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Serum antibodies to polioviruses in a Tuscan population, Italy
D Reali1, A Carducci, M A Ruschi
1Dipartimento di Scienze dell'Ambiente e del Territorio, Università di Pisa, Italy.
In order to study the serological status of a population against poliomyelitis, neutralizing antibody for the three types of polioviruses were examined in 742 serum specimens from individuals aged from 1 to 70 years and over were collected during 1985. Sixty-two percent of the sera had antibodies (titre greater than or equal to 1:8) to all three polioviruses, while 5% had no poliovirus antibody at all. However the rates of seropositivity did vary with age: the 10-19 age group had the lowest frequency of antibody (38%) to the three viruses and the difference between the percentage of this group and the previous (1-10 years) and following ones (20-70 years and over) was highly significant. The results of this seroprevalence survey indicate a gap in immunity to poliomyelitis in the population examined.
In order to study the serological status of a population against poliomyelitis, neutralizing antibody for the three types of polioviruses were examined in 742 serum specimens from individuals aged from 1 to 70 years and over were collected during 1985. Sixty-two percent of the sera had antibodies (titre greater than or equal to 1:8) to all three polioviruses, while 5% had no poliovirus antibody at all. However the rates of seropositivity did vary with age: the 10-19 age group had the lowest frequency of antibody (38%) to the three viruses and the difference between the percentage of this group and the previous (1-10 years) and following ones (20-70 years and over) was highly significant. The results of this seroprevalence survey indicate a gap in immunity to poliomyelitis in the population examined.