National Expanded Programme on Immunization work steadily, diphtheria and other 15 reported cases of infectious diseases was significantly decreased.

全国扩大免疫规划工作稳步推进，白喉等15种传染病报告病例数显著下降。

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They were so effective and cost effective and yet immunization rates were on the decline if you look back 10 years ago, However,she says in the last nine years, immunization rates for such diseases as diphtheria, tetanus and pertussis have risen sharply.

VOA: standard.2010.01.29