Immunogenicity and immune persistence in 4-year-old children completing four doses of Sabin strain or wild strain inactivated poliovirus vaccine: A phase IV, open-labeled, parallel-controlled observational study
Description
CONCLUSIONS: The neutralizing antibody level is much higher than the seroprotection cutoff (≥1:8) among children of 4 years old who completed the four-dose vaccination of either sIPV or wIPV. Therefore, another booster vaccination is not recommended
