They found that 1 million lives could be saved each year if people washed their hands with soap often , they said that programs to increase hand washing with soap could be among the most effective ways to reduce infections disease , doctor say many diseases can be prevented from spreading by hand washing , this include pinworms , influenza , the common cold , hepatitis a , meningitis and infections diarrhea 他们发现如果人们经常用肥皂洗手每年可挽回100万人生命，他们说增加用肥皂洗手的计划可能是最有效的方法来减少传染性疾病，医生说许多疾病的传播可以通过洗手来预防，这些疾病包括蛲虫病，流感、普通感冒，甲肝，脑膜炎和传染性痢疾。
