THE VACCINATION EFFECT: 100 MILLION CASES OF CONTAGIOUS DISEASE PREVENTED

 This piece of new talk about vaccionation. Vaccination programs for children have prevented more than 100 million cases of serious contagious disease in the United States .Scientists analyzed disease reports before and after the times when vaccines became commercially available. The researchers projected the number of cases that would have occurred had the pre-vaccination patterns continued as the nation’s population increased.

I believe that we use vaccination progran in third world a lot of children can prevent a lot of disease and the nation's population increased.

http://bits.blogs.nytimes.com/2013/11/27/the-vaccination-effect-100-million-cases-of-contagious-disease-prevented/?ref=health