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south africa hiv vaccine trials mckenzie pkg_00021829
south africa hiv vaccine trials mckenzie pkg_00021829

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    Searching for the cure to AIDS

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Searching for the cure to AIDS

The largest HIV vaccine trial in nearly a decade is underway in South Africa. CNN's David McKenzie reports the country's new optimism.

Searching for the cure to AIDS

The largest HIV vaccine trial in nearly a decade is underway in South Africa. CNN's David McKenzie reports the country's new optimism.