ABSTRACT
Objectives: The study sought to determine the prevalence and risk factors associated with Hepatitis B surface antigenemia (HBsAg) positivity among pregnant women in Jos, Nigeria. Methodology: This was a cross-sectional study carried out among the pregnant population in five healthcare facilities in Jos, between November 1, 2017 and April 30, 2018. Informed consent was obtained, and data on sociodemographic and risk factors for hepatitis B virus (HBV) infection were collected. Hepatitis B viral infection was assessed using the in vitro HBsAg diagnostic rapid kit (Acon Laboratories, USA). Descriptive statistics, Chi-square test, and logistic regression were performed to identify predictors of HBV infection in the study population. All statistical analyses were carried out on STATA version 15. Results: Of the 3,238 women enrolled, 7.4% (241/3238) (95% confidence interval [CI] = 6.6% to 8.4%) were HBsAg positive. The absence of HBV vaccination (adjusted odds ratio [AOR] = 2.49; 95% CI = 1.49-4.09; P < 0.001), co-infection with HIV (AOR = 1.90; 95% CI = 1.18-3.08; P = 0.009), and higher parity (AOR = 1.37; 95% CI = 1.04-1.79; P = 0.024) were independently associated with HBV infection in pregnancy. Conclusions: The prevalence of HBV infection among pregnant women was high, especially among those without prior vaccination for HBV, those with HIV co-infection and higher parity.
RésuméObjectifs: L'étude visait à déterminer la prévalence et les facteurs de risque associés à la positivité à l'antigénémie de surface de l'hépatite B (AgHBs) chez les femmes enceintes à Jos, Nigéria. Méthodologie: Il s'agit d'une étude transversale réalisée auprès de la population enceinte dans cinq dans les établissements de santé de Jos, entre le 1er novembre 2017 et le 30 avril 2018. Un consentement éclairé a été obtenu et des données sociodémographiques et des facteurs de risque d'infection par le virus de l'hépatite B (VHB) ont été collectés. L'infection virale de l'hépatite B a été évaluée à l'aide du diagnostic in vitro de l'HBsAg kit rapide (Acon Laboratories, USA). Des statistiques descriptives, un test du chi carré et une régression logistique ont été effectués pour identifier les prédicteurs de Infection par le VHB dans la population étudiée. Toutes les analyses statistiques ont été effectuées sur STATA version 15. Résultats: Sur les 3 238 femmes inscrites, 7,4% (241/3238) (intervalle de confiance à 95% [IC] = 6,6% à 8,4%) étaient positifs pour l'AgHBs. L'absence de vaccination contre le VHB (cotes ajustées rapport [AOR] = 2,49; IC à 95% = 1,494,09; P <0,001), co-infection par le VIH (AOR = 1,90; IC à 95% = 1,183,08; P = 0,009) et plus la parité (AOR = 1,37; IC à 95% = 1,04-1,79; P = 0,024) était indépendamment associée à l'infection par le VHB pendant la grossesse. Conclusions: le la prévalence de l'infection par le VHB était élevée chez les femmes enceintes, en particulier chez celles qui n'avaient pas été vaccinées contre le VHB, celles avec le VIH co-infection et parité plus élevée.
Subject(s)
Hepatitis B Surface Antigens/blood , Hepatitis B/epidemiology , Adult , Coinfection/complications , Coinfection/epidemiology , Coinfection/virology , Cross-Sectional Studies , Female , HIV Infections/complications , HIV Infections/epidemiology , Hepatitis B/diagnosis , Hepatitis B/immunology , Hepatitis B Antibodies/blood , Hepatitis B virus/isolation & purification , Humans , Nigeria/epidemiology , Pregnancy , Pregnancy Complications, Infectious/epidemiology , Pregnancy Complications, Infectious/microbiology , Prevalence , Risk Factors , Young AdultABSTRACT
BACKGROUND AND OBJECTIVES: Measuring head circumference (HC) of newborns is an important tool for evaluating intra-uterine brain development. HC reference charts currently in use in Nigeria are not representative of the local population. We thus present locally derived HC reference data for Nigerian infants at birth. SUBJECTS AND METHODS: We reviewed birth records of all infants at the Jos University Teaching Hospital (JUTH) over a 10 year period from January 2006. JUTH is a tertiary care center offering obstetric services to a large population of women in Jos and its environs. All births with gestational age between 28 and 42 weeks were included in the study. STATA version 14 was used to calculate gestational age associated HC percentile measurements. RESULTS: We included 18 282 babies to generate the reference values. The mean HC value was 34.4 ± 2.1 cm (M = 34.6 ± 2.16 cm, F = 34.1 ± 2.02 cm, p < 0.001). Our HC reference values significantly differ from the USA and INTERGROWTH-21 charts currently in use in our country. Mean HC was higher in male infants compared with female infants. This difference was uniformly so across all gestational age groups. CONCLUSIONS: The use of our locally derived HC reference values could be more appropriate in defining normal head growth in Nigerian infant populations thereby improving newborn care.
