Deliverance, when it arrives, will come in a small glass vial. First there will be a cool sensation on the upper arm as an alcohol wipe is rubbed across the skin. Then there will be a sharp prick from a needle. Twenty-one days later, the same again. As the nurse drops the used syringe into the bin with a clatter, it will be hard not to wonder how something so small can solve a problem so large.
Source: economist.com
