Prevention of Mother-to-Child HIV Transmission Service Utilization among Pregnant Women in Northeast Ethiopia: A Cross-Sectional Survey.

BACKGROUND: Targeting pregnant women attending antenatal care clinics provides a unique opportunity for implementing the Prevention of Mother-to-Child Transmission (PMTCT) programs against human immunodeficiency virus (HIV) infection of newborn babies. The objective of this study was to assess the PMTCT service utilization rate and to characterize its reasons among pregnant women attending antenatal care clinics at selected public health facilities in Debre Berhan Town, Northern Ethiopia. METHODS: A facility-based cross-sectional survey was conducted among 355 pregnant women from May 1 to June 15, 2019. The participants were selected by systematic random sampling technique, and data were collected using a pretested interviewer-administered structured questionnaire. Descriptive statistics like frequency, mean, and standard deviation were reported using text, table, and graphs. RESULTS: The mean ages of the respondents were 24 (±5.6) years, and the majority of the respondents (287 (80.8%)) were urban residents. In this study, prevention of mother-to-child HIV transmission service utilization rate was 86.8%. The most frequently mentioned reasons for not utilization of services were fear of stigma and discrimination (42.6%), fear of rejection by partner (19.1%), fear of positive test results (17.0%), lack of awareness (12.7%), and wastage of time (8.5%). Hence, continuous health education and comprehensive counseling are necessary to increase the awareness and reduce stigma, fear of the positive result, and partner rejection.

Photocatalytic degradation of methylene blue dye by zinc oxide nanoparticles obtained from precipitation and sol-gel methods.

Zinc oxide (ZnO) nanoparticles were synthesized by precipitation and sol-gel methods. The aim of this study was to understand how different synthetic methods can affect the photocatalytic activity of ZnO nanoparticles. As-synthesized ZnO nanoparticles were characterized by X-ray diffraction (XRD) and UV-Visible spectroscopic techniques. XRD patterns of ZnO powders synthesized by precipitation and sol-gel methods revealed their hexagonal wurtzite structure with crystallite sizes of 30 and 28 nm, respectively. Their photocatalytic activities were evaluated by photocatalytic degradation of methylene blue, a common water pollutant, under UV radiation. The effects of operational parameters such as photocatalyst load and initial concentration of the dye on photocatalytic degradation of methylene blue were investigated. While the degradation of dye decreased over the studied dye concentration range of 20 to 100 mg/L, an optimum photocatalyst load of 250 mg/L was needed to achieve dye degradation as high as 81 and 92.5 % for ZnO prepared by precipitation and sol-gel methods, respectively. Assuming pseudo first-order reaction kinetics, this corresponded to rate constants of 8.4 × 10-3 and 12.4 × 10-3 min-1, respectively. Hence, sol-gel method is preferred over precipitation method in order to achieve higher photocatalytic activity of ZnO nanostructures. Photocatalytic activity is further augmented by better choice of capping ligand for colloidal stabilization, starch being more effective than polyethylene glycol (PEG).