<prompt> The Most common organism causing meningitis in a patient with AIDSCandida albicansStreptococcus pneumoniaeCryptococcus neoformansHaemophilus influenzae  <response>: C Cryptococcus neoformans Cryptococcal meningitis is the most serious type of infection and can resemble tuberculous or other chronic types of meningf.is. Its onset is insidious and the course slow and progressive. It is often seen in AIDS. 