The correct answer is…

Pneumonia

Pneumonia kills more children worldwide than any other disease, more than AIDS, malaria and measles combined. Every year, approximately 2 million children under five years of age die from pneumonia. Most of these lives could with be saved with increased access to cost-effective tools, like immunizations and antibiotics.

In descending order, the top causes of death for children under five:

1. Pneumonia
2. Diarrhea
3. Malaria
4. Measles
5. HIV/AIDS

As we get ready to commemorate World Pneumonia Day on November 2nd, check back on the ONE Blog for more about this global killer and what’s being done to prevent it.