The bloc seems at last to have a firm hand on inoculation and recovery—but efforts to engineer even progress among member states are not quite panning out. In recent years Bangladesh’s government has been cosy with a puritanical Islamist group; we ask why the relationship has grown complicated. And a genetic-engineering solution to the problem of mosquito-borne disease. For full access to print, digital and audio editions of The Economist, subscribe here www.economist.com/intelligenceoffer