Survey on measles vaccination rate and measles antibody level in population in Luliang county of Yunnan province, 2010

Objective To evaluate the performance of measles vaccination and understand the measles antibody level in the population in Luliang. Methods Nine vaccination clinics in 3 townships (Zhongshu, Zhaokua and Majie) were selected by stratified and cluster samplings to conduct survey. Results Totally 390 people were surveyed, the overall measles vaccination rate was 94.10%. the serum antibody positive rate was 99.23%. The measles vaccination rate was 96.83% in Zhongshu, 93.85% in Zhaokua and 91.79% in Majie. The measles vaccination rate in age groups were as follows:71.74% in age group of ＜1 year old, 100% in age group of 1-2 years old, 100% in age group of 3-4 years old, 100% in age group of 5-6 years old, 98% in age group of 7-10 years old, 100% in age group of 11-14 years old, 89.58% in age group of 15-19 years old and 91.49% in age group of 20 years old, and the serum antibody positive rate was 95.65% in age group of ＜1 year old, 100% in age group of 1-2 years old, 100% in age group of 3-4 years old, 100% in age group of 5-6 years old, 98% in age group of 7-10 years old, 100% in age group of 11-14 years old, 100% in age group of 15-19 years old and 100% in age group of 20 years old. Conclusion The measles vaccination rate in Zhaokua and Majie should be increased to meet the requirement of ＞95% in national immunization program. The serum antibody positive rates of measles in all age groups were ＞95% (indicating that the herd immunity had been formed), which would facilitate the measles control and elimination.