Seroprevalence of IgG antibodies to herpes simplex virus type-1 in Nigerian children.

BACKGROUND: Herpes simplex virus type-1 (HSV-1) can cause chronic ulcerative infection in immunosuppressed children leading to latency with subsequent reactivate in the conjunctiva resulting in scarring, thickening of the cornea and blindness. They are also common cause of fatal sporadic encephalitis in 70% of paediatric patients. This cross sectional study determined the prevalence of HSV-1 in children in Kaduna State, Nigeria. METHOD: A total of 377 blood samples were collected from children less than five years old attending some selected hospitals in Kaduna State and analyzed for HSV-1 IgG antibodies employing Enzyme immune assaytechnique by using commercially available ELISA Kits. RESULTS: Sero-prevalence rate of 57.8% (218/377) was obtained. The highest prevalence of HSV-1 infection was obtained in children in age group 49-60 months (85.2%) and lowest in children in age group 13-24 months (44.8%). Further analysis of the result of children less than one year old showed that children 9-16 weeks old were more susceptible to HSV-1 infection. HSV-1 infection was significantly associated with age (X2 = 37.92, df = 4, p = 0.001). Though a higher prevalence was obtained in female children (61.5%) than male children (54.5%), the difference observed in the prevalence was not statistically significant (X2 = 1.84, df = 1, P = 0.105). HSV-1 infection was significantly associated with children who were in school (X2 = 15.28, df = 1, P = 0.001) with a higher prevalence of 74.3%. CONCLUSION: Over half of the children sampled were protected from HSV-1 infection while 42.2% were susceptible to the infection and were at risk of developing severe HSV-1 manifestation which includes keratitis, encephalitis and Keratoconjunctivitis.

Production of extended spectrum beta-lactamases of urinary isolates of Escherichia coli and Klesiella pneumoniae in Ahmadu Bello University Teaching Hospital; Zaria; Nigeria

Multidrug resistant strains of Klebsiella pneumoniae and Escherichia coli constitute a problem in many hospitals. The antibiotic susceptibility profile and the Production of Extended Spetrum Beta-Lactamase (ESBL) of the strains of Klebsiella pneumoniae and Escherichia coli were assessed by the Kirby-Bauer technique and the modified disc diffusion technique respectively. Out of a total of 65 urinary specimens submitted to the Medical Microbiology laboratory at the Ahmadu Bello University Teaching Hospital; Shika-Zaria; Nigeria; 50 isolates consisting of 33 (66) Escherichia coli and 17 (34) strains of Klebsiella pneumoniae were recovered from patients suspected to have Urinary Tract Infections (UTIs). Of these 50 isolates; 15(30) were ESBL producers; made up of 6/17 (35.3) ESBL-positive Klebsiella pneumoniae isolates and 9/33 (27.3) ESBL-positive E. coli isolates. The susceptibility of the ESBL-positive Klebsiella pneumoniae isolates to ciprofloxacin; ofloxacin and amikacin were 64.7; 82.4 and 82.4 respectively; while the susceptibility of the ESBL-positive E. coli isolates were: ciprofloxacin (57.6); ofloxacin (48.5) and amikacin (84.8). All (100) of the ESBL-positive E. coli isolates and 3/6 (50) of the ESBL-positive Klebsiella pneumoniae isolates had Multiple Antibiotic Resistance (MAR) index of greater than 0.3 which is an indication that they originated from an environment where antibiotics are frequently used. It is important to determine the prevalence and antibiotic susceptibility of ESBL-producing clinical isolates as a guide to clinicians for the chemotherapy and there should be effective infection control policies to curb their spread in the hospital setting