A Guatemalan physician, Juan Funes, extended an invitation for Cutler to come to his country and refine his dick science on the proud Guatemalan people. At the time, prostitution was legal in Guatemala and sex workers were required to visit a clinic twice a week. We assume to prevent the spread of STDs. In the name of science, John Cutler was about to put a stop to that.
There was apparently a double meaning when Cutler said he was "coming to fuck people."
Funes gave Cutler a list of prostitutes known to be infected with venereal disease, but Guatemalan lists are what you use to make tamales colados, not infect a population with syphilis. You see, John Cutler was a man of impeccable scientific method, so he created his own infected prostitutes. From a batch of eight uninfected prostitutes. He got the diseases into them via spinal fluid injections, which somehow seems both less fun and more dangerous than the traditional disease gathering method. And keep in mind, his experiments on preventing STDs hadn't even begun yet, and he had already personally given eight women STDs.
John Cutler then told his sick hookers to get on as many moist, lonely dongs as possible. He had them sex up Guatemalan soldiers (who were probably confused about why they were officially being ordered to bang military hookers) and prisoners (who probably didn't ask many questions). And it, of course, didn't stop there. The hookers gave diseases to psychiatric patients, unrelated bystanders, and some say orphans as young as nine years old. And aside from the risk all nine-year-olds accept when they invite a prostitute into the back seat of their car, none of the participants gave any kind of consent. John Cutler is what pieces of shit call each other at the start of a bar fight, and even then it's usually followed by "whoa, not cool."
In total, Cutler exposed 558 soldiers, 486 psychiatric patients, 219 prisoners, and 39 others to a variety of dick-rotting diseases. To make things worse, the "research team" never got anything in the way of solid results. They found that even with trained STD-infecting professionals, they couldn't reliably infect hooker users without directly injecting. In the end, the only thing anyone learned from this travesty is that you need to keep John Cutler away from genitals.