同意，但疫苗對降低幼兒死亡率很有用，對早產兒，新生兒沒什麽用。而兒科中早產兒，新生兒死亡率最高。。。

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是的，疫苗對降低幼兒死亡率很有用，但對早產兒，新生兒沒什麽用。而兒科中早產兒，新生兒死亡率最高。。。

我同意那文章裏說的疫苗，GDP, 教育程度， 醫療設施對降低嬰幼兒死亡率很有用，我是100% for疫苗的。 不過疫苗對早產兒，新生兒死亡率沒什麽用。 美國以前Sudden infant death syndrome (SIDS)死亡率很高，研究多多，以為是遺傳病等等。。。不得其解，後來發現是因為兒科界指導家長讓小孩臉朝下睡引起的，一改成朝天睡，馬上SIDS死亡率降了》50%。 上海沒有這個問題， 因為小孩一直睡改良蠟燭包，始終朝天睡。。。 這個就是文化的差異。。。我們早產兒一直比較少，可能和懷孕時父母的自律有關。。。計劃生育後， 每個懷孕都金貴，產前檢查熱火朝天，另外， 我們也不忌諱人流，死胎是不算進預期壽命裏的。。。所以因素挺多的，我們這兒有經驗老道的產科醫生， 她們做圍產期的話， 肯定比我講的好：）

https://www.nichd.nih.gov/sts/about/SIDS/Pages/progress.aspx

We have made great progress in reducing SIDS. The largest decline in SIDS rates occurred between 1992 and 1999. Between 1994, when the Safe to Sleep® campaign (formerly known as the Back to Sleep campaign) started, and 1999, the overall SIDS rate in the United States dropped by more than 50%. During that same time period, the rates of back sleeping more than doubled:

U.S. SIDS Rate and Sleep Position, 1988—2010 (Deaths per 1,000 Live Births)

A line graph showing the U.S. SIDS rates and the percent of infants on the back sleep position from 1988 to 2010. The SIDS rate decreased steadily from a rate of approximately 1.4 in 1988 to approximately 0.5 in 2010. The percent of infants being put to sleep in the back sleeping position increased from approximately 15% in 1998 to approximately 72% in 2010.

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