A New York City resident has become the first woman suspected of transmitting Zika virus to a sexual partner.
By Nsikan Akpan
An AIDS vaccine tested in Thailand has shown signs of stopping HIV infection for the first time. Tim Clarke of ITN reports on the clinical research.
Thailand's growing AIDS epidemic has reached hundreds of thousands as the government tries to secure assistance. The NewsHour reports on AIDS in the Asian country and the efforts to reduce the disease and its stigma.
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