<prompt> In diagnosis of AIDS, criteria include the following except -CD4200CD8500CD4 : CD8 1Presence of any of the oppounistic infections tuberculosis, pneumosystic carinii, cytomegalovirus  <response>: CD4200,CD4-CD8 ratio is reversedpresence of oppounistic infection. REF:MICROBIOLOGY ANANTHA NARAYANAN NINTH EDITION PAGE.577 