Neisseria meningitidis
The most common bacterial cause of NGU is "Chlamydia trachomatis," but it can also be caused by "Ureaplasma urealyticum", "Haemophilus vaginalis", "Mycoplasma genitalium", "Mycoplasma hominis", "Neisseria meningitidis", "Gardnerella vaginalis", "Acinetobacter lwoffii", "Acinetobacter calcoaceticus", and "E.coli".