The utility of Lanzhou Lamb Rotavirus Vaccine among children under 5 in two vaccination sites of Shenzhen

Abstract

Objective To understand the immunization schedule of Lanzhou Lamb Rotavirus vaccine in post-licensed period and to evaluate the reasonableness of the present schedule. Methods A birth cohort registered in two vaccination sites in Shenzhen was investigated to get the vaccine coverage, age of immunization and vaccination seasonality, which along with the rotavirus prevalence characteristics in Shenzhen to evaluate the immunization schedule. Results The vaccine coverage is 25.2% in total, among which children immunized for 1 dose contribute to 99%. 10 months and 12 months of age is the peak immunization age. There are barely children who take their first dose after the age of 18 months. The intervals between the first and the second dose are 12 months. No peak season of administration was observed. Conclusion The recommended immunization schedule is not proper according to the rotavirus epidemiology in China. Key words: Rotavirus vaccines; Immunization schedule