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  • Title: Prevalence of Anti-Human Herpes Virus Type 7 IgG Positivity Rate among Children with Fever and Skin Rash in Diyala Province, Iraq.
    Author: Hasan AS, Abdulwahab SA, Lames K.
    Journal: Arch Razi Inst; 2023 Feb; 78(1):79-86. PubMed ID: 37312736.
    Abstract:
    Human herpesvirus 7 (HHV-7) is a T-lymphotropic virus isolated from peripheral blood mononuclear cells as beta herpes viruses. It is a highly prevalent virus since over 90% of adults are seropositive. The majority of primary infection occurs in early childhood, and its prevalence peaks at 60 % in 11-13-year-old. This study was designed to investigate the seroprevalence of HHV- 7 infections among apparently healthy children as well as child patients with fever and skin rash in the Diyala community and its association with certain socio-demographic variables. The current study is a cross-sectional study conducted in Diyala province-Iraq, extending from July 2020 to March 2021. A total of 180 child patients with fever and skin rash were included. Their age range was 1-14years. Additionally, 60 healthy age-matched children were enrolled as a control group. A special questionnaire was prepared for this study, including socio-demographic information, clinical notes and the results of a complete blood count. Human privacy was esteemed by obtaining parents' verbal approval. Blood specimen was aspirated from all study groups. Sera were separated and kept at -20 °C until tested. Enzyme-linked immunosorbent assay (ELISA) kits for the detection of anti-HHV-7 IgG were used (Mybiosource-China). Statistical analysis was done using Statistical Package of Social Science (SPSS) version 27, and the P value was considered significant wherever it was less than 0.05. The anti-HHV-7 IgG positivity rate in patients was 19.4%, and that in healthy individuals was 31.7%, with an insignificant difference (P=0.051). The highest HHV-7 IgG positivity rate was found among patients 1-4 years old, matching that in the healthy group with a statistically insignificant difference (P=0.675). The gender, residence and number of children/ family insignificantly affect the distribution of HHV-7 IgG in the control group. The mean±SD of hemoglobulin (Hb) concentration among participants with negative anti-HHV-7 IgG was insignificant compared to their positive counterparts (P=0.987). The mean±SD of total WBC count among those positive for anti-HHV-7 IgG was insignificantly higher than their negative counterpart (P=0.945). The mean±SD lymphocyte count in patients and healthy control positive for anti-HHV-7 IgG were insignificantly higher (P=0.241) and (P=0.344), respectively. Lastly, healthy control positive for anti-HHV-7 IgG had insignificantly higher lymphocyte count (P=0.710). About one-third of healthy children in our community were seropositive for anti-HHV 7 IgG antibodies that are most prevalent at 1-4 years old and are insignificantly associated with gender, residence, and the number of children per family. Furthermore, the HHV-7 infection is insignificantly associated with alterations of complete blood count parameters.
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