In the USAF our unit was tasked with investigating the airmen that were diagnosed at the hospital with VD...most cases were blacks or women that slept with black men. Some were women that slept with black men then white men. The benefits of having that job was knowing which women to avoid at the clubs.
Stationed TDY on Okinawa at Koza City. The AFRTS radio had a broadcast of “Here are your numbers for today. 18 72 39 65.” All the prostitutes in town had a number and you listened to see if the number came up positive for VD.
Once a typhon came through Guam and all the aircraft and ground crews were sent to Okinawa. When past they returned to Guam.
Two weeks later I was sent TDY to Guam. When I went to turn in my medical records, I walked past a long line of sad faced airmen getting their VD shots.
Same in Thailand.