Myriam Sidibe is a warrior in the fight against childhood disease. Her weapon of choice? A bar of soap. For cost-effective prevention against sickness, it’s hard to beat soapy handwashing, which cuts down risk of pneumonia, diarrhea, cholera and worse. Sidibe, a public-health expert, makes a smart case for public-private partnerships to promote clean hands — and local, sustainable entrepreneurship.

[Editor's Note]  With the advent of the flu and cold season, not to mention Ebola, Myriam provides us with effective tools to deal with these and many other illnesses.