Assessment of the prevalence of enteric viruses in the final effluents of two peri-urban wastewater treatment plants

Hepatitis A is a common form of viral hepatitis. It is usually transmitted through the ingestion of contaminated food and water. This systematic review was carried out to summarise the overall prevalence of Hepatitis A virus (HAV) in different water matrices: untreated and treated wastewater, surface water, groundwater, drinking water, and others (e.g., irrigation water and floodwater). The literature search was performed in four databases: PubMed, Web of Science, Global Index Medicus, and Excerpta Medica Database. Heterogeneity (I2) was assessed using the χ2 test on the Cochran Q statistic and H parameters. A total of 200 prevalence data from 144 articles were included in this meta-analysis. The overall prevalence of HAV in water matrices was 16.7% (95% CI: 13.4–20.3). The prevalence for individual matrix was as follows: 31.4% (95% CI: 23.0–40.4) untreated wastewater, 18.0% (95% CI: 9.5–28.2) treated wastewater, 15.0% (95% CI: 10.1–20.5) surface water, 2.3% (95% CI: 0.1–6.0) in groundwater, 0.3% (95% CI: 0.0–1.7) in drinking water, and 8.5% (95% CI: 3.1–15.6) in other matrices. The prevalence was higher in low-income economies (29.0%). Africa and Eastern Mediterranean were the regions with higher HAV prevalence values. This study showed a high heterogeneity (I2 > 75%) with a significant publication bias (p value Egger test < 0.001). The results of this review suggest that water matrices could be an important route of HAV transmission even in industrialized countries, despite the lower prevalence compared to less industrialized countries, and the availability of advanced water management systems. More effective water/wastewater treatment strategies are needed in developing countries to limit the environmental circulation of HAV.

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Occurrence of Hepatitis A Virus in Water Matrices: A Systematic Review and Meta-Analysis

Takuissu

Kenmoe

Ebogo‐Belobo

et al. 2023

IJERPH

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Farmer’s Perception on the Use of Beneficial Microorganism Fertilizer for the Growth of Crops in the Northwest Region of Cameroon

R.F.,

G.P.,

H.D.

et al. 2023

African Journal of Environment and Natural Science Research

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Agricultural production mainly depends on the nature of soil, which is a measure of a complex set of biological, chemical and physical interactions driven by microorganisms. Crop production has been declining due to low soil fertility, disease and pests. The main objective of this research was to investigate farmer’s perception on the use of effective microorganism fertilizers for crop production in the North West region of Cameroon. The descriptive survey method was used. Farmers were randomly sampled at the main shop where one of such biofertilizers (Effective microorganism, EM) is obtained in the North West. The sample size was 100 farmers. Data were collected through the administration of questionnaires and visits to some fields. Results showed that 79% of the respondents used microorganism fertilizers. The significant factors influencing the adoption of microorganism fertilizers included age (54%), type of farmer (65%), cost and income from using organic fertilizers (66%), belonging to farmers based organization (54%) and the benefits of the microorganism where many respondents stated that microorganism fertilizer increased yield and also improve the fertility of the soil (40%). The most pressing constraint associated with the use of effective microorganisms fertilizer was offensive odor. There is the need for consumer sensitization on the potential benefits of growing and consuming organically grown crops. This could expand the demand for organically grown crops and the willingness of consumers to pay premium prices and hence increase organic production by farmers.

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Assessment of the prevalence of enteric viruses in the final effluents of two peri-urban wastewater treatment plants

Cited by 2 publications

References 46 publications

Occurrence of Hepatitis A Virus in Water Matrices: A Systematic Review and Meta-Analysis

Occurrence of Hepatitis A Virus in Water Matrices: A Systematic Review and Meta-Analysis

Farmer’s Perception on the Use of Beneficial Microorganism Fertilizer for the Growth of Crops in the Northwest Region of Cameroon

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