Fatalities increasing in many parts of world less successful in reducing dangerous pollutants, says research
WHO and Unicef warn of fall in immunisations for diseases such as diphtheria, polio and measles
Prime minister wants Britain to take bigger role in global fight against pandemic
In 10 years the UN’s fund to fight Aids, tuberculosis and malaria has attracted $22bn in pledges for projects throughout the developing world. But as donors retrench it will have to refocus its targets for support
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