Googling "Neisseria gonorrhoeae vaccine" turned up... honestly, a lot of papers that're above my educational level. That said, this[1] WHO article from halfway

Googling "Neisseria gonorrhoeae vaccine" turned up... honestly, a lot of papers that're above my educational level. That said, this[1] WHO article from halfway down the results says that "observational studies indicating that vaccines developed for serogroup B Neisseria meningitidis might offer some protection against gonorrhoea, providing promise that gonococcal vaccines are biologically feasible", which I'd suspect is referring to the development that the OP is talking about. Please, feel free to follow up on that article if you have higher scientific literacy than I do. :D [1]: https://www.who.int/teams/immunization-vaccines-and-biologicals/diseases/neisseria-gonorrhoeae https://www.who.int/teams/immunization-vaccines-and-biologic...