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Orlando Gay Men Angry They Can't Donate Blood after Massacre

As they mourn friends and partners murdered in the gay nightclub massacre, homosexual men in Orlando are eager to join in the rush of solidarity by donating blood for those victims still clinging to life.

But they are angry and frustrated: federal law imposes strict conditions to guard against HIV transmission. Gay men can only give if they have not had sex with another man for a year.

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HIV Diagnostic Kit Wins European Inventors Prize

A rapid HIV diagnostic kit for developing nations, designed by Cambridge University researcher Helen Lee, won the Popular Prize at the European Inventor Awards on Thursday.

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Too Soon to Release GM Mosquitoes to Fight Zika

Releasing genetically-modified mosquitoes into the wild to fight malaria, Zika or other insect-borne diseases is premature and could have unintended consequences, researchers said in a new report.

"Our committee urges caution -- a lot more research is needed to understand the scientific, ethical, regulatory and social consequences of releasing such organisms," said Arizona State University professor James Collins, who was co-chair of a National Academies of Sciences, Engineering and Medicine committee.

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Liberia Ebola Outbreak to be Declared Over

The latest Ebola outbreak in Liberia, the last country still affected by the deadliest flare-up in the history of the feared tropical virus, is to be declared over on Thursday.

Liberia will have passed the World Health Organization (WHO) threshold of 42 days -- twice the incubation period for the virus -- since the last known patient tested negative for the second time.

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WHO: Thailand First in Asia to Eliminate Mother-to-Baby HIV

Thailand has become the first Asian country to eliminate mother-to-child transmission of HIV, the World Health Organization said Wednesday, a milestone in the fight against the disease.

The announcement is a boost for a generation of Thai health workers who have transformed the nation from one of Asia's most HIV-ravaged societies to a pin-up for how to effectively tackle the crisis.

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LGBT Groups Defy U.N. Decision to Bar them from AIDS Meet

Gay and transgender rights groups barred from a major U.N. AIDS conference opening Wednesday plan to defy the decision by joining other delegations at the meeting on ending the HIV epidemic.

Twenty-two groups were denied U.N. accreditation to attend the gathering after Russia, the Organization of Islamic Cooperation, Cameroon and Tanzania raised objections, drawing outrage from AIDS activists.

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Hong Kong Culls Thousands of Birds over Avian Flu Scare

Hong Kong culled 4,500 birds on Tuesday after the deadly H7N9 bird flu virus was discovered in a chicken at a local market.

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When to Give Up: Treatment or Comfort for Late-Stage Cancer?

Two months before Joe Clark died of colon cancer at age 31, a doctor gently told him it was time to stop treatment.

He had suffered through more than a year of chemotherapy that produced painful sores in his mouth, last-ditch major abdominal surgery had left behind excruciating scar tissue, and hope had dried up. But the end of treatment had a surprise effect on Clark and his wife.

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Studies: Precision Medicine Can Widen Cancer Care Options

Using a patient's individual tumor biomarkers to determine the best treatment can improve success rates, studies showed Saturday.

Unlike chemotherapy and radiation therapy, targeted medicine allows to preserve healthy cells.

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Top Indian Hospital Says Duped in Kidney Sale Racket

One of India's top hospitals unwittingly removed the kidneys of organ-trafficking victims believing they were donating them to relatives, a hospital spokesman said Saturday, after police arrested five over the racket.

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