[Evaluation of second National Immunization Day activities, in China].

The second National Immunization Day (December 1994/January 1995) for 0-47 months old children, seemed to be well conducted, for not only the coverage of OPV being increased, but also the continued accumulation of zero-dose children being under controlled. In most of the provinces, it appears that the coverage of the second NID was significantly greater than the first NID. Based on comparison of the number of children immunized by birth cohort, there were 7.9% (1st round) and 4.3% (2nd round) more 1-3 year old children immunized in the 2nd NID than the 1st NID. Most of children missed in the 1st NID were distributed in one year old cohort (they were less than 1 year old the year before), so it is most likely that children less than 1 year old are more at risk to be missed by NID. After the 1st NID, the numbers of zero-dose children were reduced to 59.3%, and the percentage for those zero-dose children less than 1 year old increased from 66% to 84%, so children less than 1 year old should have the high priority to be immunized for achieving expected goal. The second round of second NID was not implemented so well as the first round in some of the provinces. Comparing with the first round, the number of children immunized at second round was decreased in 468 (18%) counties. In addition, the number of expected children to be immunized was less than the registered children, in 37% of the counties; and still there were 19% of the counties in which the number of children immunized in the second NID were less than the children with routine immunization cards. The above mentioned problems need to be solved effectively.