Social cycle aids HIV spread
<p>By analysing the similarity of viral genetic sequences from nearly 1,600 people with HIV in one community in KwaZulu-Natal, the study shows that adolescent girls and women in their early 20s tend to
Amy Maxmen
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Malaria vaccine cautiously recommended for use in Africa
<p>The world's first vaccine against malaria should be rolled out in limited 'pilot' demonstrations in Africa, an advisory group to the World Health Organization (WHO) in Geneva said on 23
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Calorie restriction falters in the long run
To those who enjoy the pleasures of the dining table, the news may come as a relief: drastically cutting back on calories does not seem to lengthen lifespan in primates. The verdict, from a 25-year study
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Generic HIV drugs will widen US treatment net
Upcoming patent expiries stand to make medicines cheaper — although less convenient.
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Florida abuzz over mosquito plan
<p>It took a decade for the biotechnology firm Oxitec to develop genetically modified mosquitoes whose progeny die before they can spread dengue fever. But it took only three months for Mila de Mier to
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Malaria surge feared
The WHO releases action plan to tackle the spread of insecticide-resistant mosquitoes.
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Death at the doorstep
Even a cure is not preventing deaths from malaria in Uganda. Poor education and limited access to healthcare are among the reasons why.
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The vitamin D-lemma
A vociferous debate about vitamin-D supplementation reveals the difficulty of distilling strong advice from weak evidence.
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Grassroots initiative
A Cambodian group has developed a pioneering community-based approach to HIV and TB care and research. Amy Maxmen describes how this powerful model is being expanded to other war-torn countries.