Study on immunization coverage rate of hepatitis b vaccine and HBsAg carrier rate of children below 3 years old in rural area of Anqing city of Anhui province

Objective To adopt hepatitis B(HB)vaccine into EPI program, Methods a base line investigation on was carried out HB vaccine coverage rate, first dose of timely HB vaccine injection rate, timely full course vaccination rate, the HBsAg carrier rate and the anti HBs positive seroconversion rate in children below 3 year old children in Anqing city in December 2002 by the method of random cluster sampling.Results The results in 930 children investigated showed that, the HB vaccine full course vaccination rate was 74.30%, the timely first dose injection rate was 36.45% and the timely full course vaccination rate was 29.46%. Various ages had different immunization status, the first timely injecting rate of children below 1 year old is the highest(χ 2=23.23,P0.01). HBsAg was detected positive in 15 children, the HBsAg carrier rate was 1.61%. Anti HBs positive seroconversion rate was 78.13%(493/631).The timely vaccination rates of the first dose of HB vaccine in plain area were 38.40% ,the plain area showed much higher rates than the mountainous area(χ 2=4.56,P0.05).The timely vaccination rates of the first dose of HB vaccine for children born in hospital and home were 48.74% and 14.63% (χ 2=107.67,P0.01)respective.Conclusion After HB vaccination had been brought into EPI, raising HB vaccine timely vaccination rate of the first dose and timely full course vaccination rate for newborns in rural area is the main task in the future in our city.