Nearly 800 plaintiffs have launched a billion-dollar lawsuit against Johns Hopkins University over its alleged role in the deliberate infection of hundreds of vulnerable Guatemalans with sexually transmitted diseases, including syphilis and gonorrhoea, during a medical experiment programme in the 1940s and 1950s.

The lawsuit, which also names the philanthropic Rockefeller Foundation, alleges that both institutions helped “design, support, encourage and finance” the experiments by employing scientists and physicians involved in the tests, which were designed to ascertain if penicillin could prevent the diseases.

Researchers at Johns Hopkins School of Medicine held “substantial influence” over the commissioning of the research program by dominating panels that approved federal funding for the research, the suit claims.

The lawsuit asserts that a researcher paid by the Rockefeller Foundation was assigned to the experiments, which he travelled to inspect on at least six occasions.

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