This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Communicable diseases, Subject name: Social & Preventive Medicine
In diagnosi of AIDS, criteria include the following except - 
Select and explain. 
A. CD4<200, B. CD8<500, C. CD4 : CD 8 =1, D. Presence of any of the oppounistic infections tuberculossis, pneumosystic carinii, cytomegalovirus
B: CD8<500
Answer: B: CD8<500 
Explanation: absolute CD4 lymphocyte count is the predictor for HIV progression.risk of progression to an AIDS oppeunistic infection or malignancy is high with CD4<200 normal CD4:CD8 ratio is 2. If ratio decreases to 1 or less,it denotes AIDS clinical diagnosis of AIDS, minor signs includes persistent cough for more than 1 month,generalised pruritic dermatitis,oropharyngeal candidiasis,generalised lymphadenopathy,history of herpes zoster,herpes simplex infection major criteria includes weight loss >10% body weight,chronic diarrhoea >1 month,prolonged fever of more than 1 month park edition 23 page 348,350