HIV/AIDS is one of the most dynamic epidemic infectious diseases. An estimated 1000 children are newly infected with HIV every day, most of them in sub-Saharan Africa. They often present with various clinical and laboratory manifestations that complicates their management. Objectives: To determine the baseline clinical and laboratory features of HIV-infected children presenting at the University of Nigeria Teaching Hospital (UNTH) Ituku/Ozalla. Methods: Clinical and laboratory data were

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... d from HIV infected children seen at the Pediatric HIV Clinic of UNTH between July 1st 2010 and June 30th 2012. Clinical and immunological staging of the patients were done using the WHO criteria and data analysis was with SPSS version19. Results: Two hundred and ten children were enrolled into the study. The most common route of HIV infection was vertical transmission (95.2%). Common presenting clinical and 754 laboratory data were: anaemia (92.9%), cough (76.2%), fever (63.3%), popular rash (62.9%) and poor weight gain (61.0%). Thirty-four children (16.2%) each had severe and moderate acute malnutrition while 92 children (43.8%) were stunted. Tuberculosis, hepatitis B and C co-infections were seen in 32.4%, 1.9% and 3.3% of the children respectively. Most of the patients had either a WHO clinical stage III (42.4%) or II (39.0%) disease. Severe immunosuppression based on CD4% or count was seen in more than half of the patients (59.1%). Conclusions: Anaemia was the most common clinical/laboratory finding; followed by cough. Although our patients were likely to present with WHO clinical 2 or stage 3 disease, severe immunological suppression was common.