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Amplifying and Quantifying HIV-1 RNA in HIV Infected Individuals with Viral Loads Below the Limit of Detection by Standard Clinical Assays
Published on: September 26, 2011
Unexplained HIV-1 infection in children--documenting cases and assessing for possible risk factors
R Hiemstra1, H Rabie, H S Schaaf
1Department of Paediatrics and Child Health and Tygerberg Children's Hospital, Faculty of Health Sciences, University of Stellenbosch.
Insights
Unexplained human immunodeficiency virus (HIV) infections in children were investigated. Circumstantial evidence suggests nosocomial transmission, highlighting the need for further studies on medical procedures that may spread HIV.
Area of Science:
- Pediatrics
- Infectious Diseases
- Epidemiology
Background:
- Previous reports suggested horizontal transmission of HIV-1 between siblings.
- Several cases of unexplained pediatric HIV infections have been reported since 2000.
- A registry was established to investigate unexplained HIV transmission in children.
Purpose of the Study:
- To investigate the extent of horizontal or unexplained human immunodeficiency virus (HIV) transmission in children.
- To identify potential sources of HIV infection in pediatric cases with no clear risk factors.
Main Methods:
- Retrospective review of medical charts for children with unexplained HIV infection.
- Data collection on hospitalizations and medical procedures prior to HIV diagnosis.
Main Results:
- Fourteen children with unexplained HIV infection were identified.
- Thirteen of the 14 children had prior hospitalizations, often as neonates.
- All but two children had undergone intravascular cannulation and/or intravenous drug administration before diagnosis.
Conclusions:
- Confirmed cases of HIV infection with inadequately explained sources.
- Circumstantial evidence supports nosocomial (hospital-acquired) transmission.
- Urgent need for further studies to identify medical procedures facilitating HIV spread.
Background:
In the year 2000 we reported possible horizontal transmission of HIV-1 infection between two siblings. An investigation of three families, each with an HIV-infected child but seronegative parents, permitted this finding. Sexual abuse and surrogate breast-feeding were thought unlikely. The children had overlapping hospitalisation in a regional hospital. Since then several cases of unexplained HIV infection in children have been reported. A registry was established at Tygerberg Children's Hospital for collection of data on the extent of horizontal or unexplained transmission of HIV in children.
Study Design:
Retrospective chart review.
Results:
Fourteen children were identified, 12 from the Western Cape and 1 each from the Eastern Cape and KwaZulu-Natal. Thirteen (92%) had been hospitalised previously. In the Western Cape, children had been hospitalised in 8 hospitals. Ten of 13 (77%) were admitted as neonates and 9 of 13 (69%) had 2 or more admissions. Intravascular cannulation and intravenous drug administration occurred in all but 2 children before HIV diagnosis.
Conclusion:
We have confirmed HIV infection in a number of cases where the source of infection has been inadequately explained. Circumstantial evidence supports but does not prove nosocomial transmission. Further studies and identification of medical procedures conducive to the spread of HIV are urgently needed.
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