H. Influenzae causes respiratory tract infection, otitis media, sinusitis, meningitis, and conjunctivitis.
Neisseria gonorrhoeae is a gram-negative diplococcus that causes sexually transmitted diseases such as urethritis, cervicitis, proctitis, pharyngitis, and disseminated disease.
Haemophilus influenzae is a gram-negative coccobacilli that can be encapsulated or nonencapsulated.
N. Gonorrhoeae can be identified by its characteristic appearance on Gram stain, oxidase test, catalase test, and growth on selective medium (Thayer Martin).
Haemophilus influenzae type b (Hib) vaccine has been effective at reducing the incidence of Hib disease.