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Community health workers with the Population Effects of Antiretroviral Therapy to Reduce HIV Transmission study did door-to-door HIV testing of 1 million people annually for 3 years.   KIM CLOETE

Largest ever HIV prevention study delivers sobering message

SEATTLE, WASHINGTON—The recipe for ending HIV epidemics seems straightforward. Introduce widespread testing. Immediately put those who test positive on antiretroviral (ARV) drugs, which suppress the…

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This rice has had some of its DNA bases altered by a form of the genome editor CRISPR, but some of them were not the intended targets.   JON COHEN

CRISPR offshoot still makes mistakes editing DNA, raising concerns about its medical use

Variations of the genome editor CRISPR have wowed biology labs around the world over the past few years because they can precisely change single DNA…

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A policeman in Karachi, Pakistan, protects a health worker as she administers a polio vaccine.   ASIF HASSAN/AFP/GETTY IMAGES

Q&A: The odd—and sometimes tense—intersection of cops, soldiers, and public health

In 2003, epidemiologist Nicholas Thomson was doing HIV prevention work in Chiang Mai, Thailand, when the country’s president, Thaksin Shinawatra, launched an aggressive war on…

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Researchers at Oregon Health & Science University in Portland used the genome editor CRISPR to correct a mutation that causes a heart problem. The embryos were not implanted.   OHSU

Draw clearer red lines around human gene editing, say leaders of Chinese and U.S. science academies

The world urgently needs better international oversight of “genome editing in human embryos for reproductive purposes,” says an editorial co-written by the heads of the…

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A health care worker in Butembo, the Democratic Republic of the Congo, carries a 4-day-old baby suspected of having Ebola. Children have been especially hard hit in this outbreak.   JOHN WESSELS/AFP/GETTY IMAGES

Ebola vaccine is having ‘major impact’ but worries about Congo outbreak grow

As an Ebola outbreak in a conflict-plagued region of the Democratic Republic of the Congo (DRC) continues to spread after 4 months, there’s a glimmer…

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A report on the culture of the Joint United Nations Programme on HIV/AIDS calls for the firing of Michel Sidibé, its executive director.   DENIS BALIBOUSE/REUTERS

Panel investigating bullying, harassment at UNAIDS finds ‘boy’s club,’ calls for firing of head

An independent panel that reviewed the culture at the Joint United Nations Programme on HIV/AIDS (UNAIDS) in Geneva, Switzerland, has issued a scathing report that calls for…

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