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1994-10-25
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Document 2680
DOCN M94A2680
TI Lack of hundred percent sensitivity of ELISA in Indian patients with
AIDS.
DT 9412
AU Sehgal S; Immunopathology Department, P.G.I.M.E.R., Chandigarh.
SO Int Conf AIDS. 1994 Aug 7-12;10(1):249 (abstract no. PB0425). Unique
Identifier : AIDSLINE ICA10/94369895
AB At the Postgraduate Medical Institute, Chandigarh, India, a Surveillance
Centre was set up in 1987 to monitor time trends and risk factors in HIV
infection. By December, 1993, 91384 cases (72190 donors and 19194 high
risk cases) were screened by ELISA and 275 confirmed positive by Western
blot using ARC and later W.H.O. criteria. DNA amplification was done by
standard PCR protocols when necessary. Thirty five cases were foreign
students mainly from an African country. Of the remaining 240 cases, 51
had acquired infection through infected blood/products and only 2 had
acquired infection through I.V. drug use indicating gross differences in
risk factors in different parts of India. The high risk group showed a
steady increase from nil to 10.8 per thousand. At least 65 cases had
full blown disease and 40 were already dead. Interestingly two cases
with full blown disease tested negative by one type of WHO approved
peptide based ELISA and were positive by another kit. One case had
cerebral toxoplasmosis and another had HIV associated polymyositis. It
is concluded that a) there are different predominant risk factors in
different parts of India,b) kits designated to have 100% sensitivity may
not depict similar sensitivity in Indian patients particularly in full
blown disease with falling antibodies rising antigenemia and possible
genetic variants.
DE AIDS Serodiagnosis/*METHODS Blotting, Western Comparative Study
*Developing Countries Enzyme-Linked Immunosorbent Assay/*METHODS Human
HIV Antibodies/*BLOOD HIV
Seropositivity/*DIAGNOSIS/IMMUNOLOGY/TRANSMISSION India Predictive
Value of Tests Reagent Kits, Diagnostic Risk Factors Sensitivity and
Specificity MEETING ABSTRACT
SOURCE: National Library of Medicine. NOTICE: This material may be
protected by Copyright Law (Title 17, U.S.Code).