This is not the first time that the US use humans as guinea pigs to test viruses produced in their laboratories. According to Guzman in Before It is News, between 1946 and 1948, under President Harry S. Truman in collaboration with the President of Guatemala Jose Arevalo and his administration deliberately infected more than 1,500 prostitutes, soldiers, prisoners and mental patients with syphilis and other sexually transmitted diseases such as chancroid and gonorrhoea out of more than 5500 Guatemalan people who participated in the experiments.