Background Noroviruses are the leading cause of acute gastroenteritis in all age groups globally. The problem is magnified in developing countries including Africa. These viruses are highly prevalent with high genetic diversity and fast evolution rates. With this dynamicity, there are no recent review in the past five years in Africa. Therefore, this review and meta-analysis aimed to assess the prevalence and genetic diversity of noroviruses in Africa and tried to address the change in the prevalence and genetic diverisity the virus has been observed in Africa and in the world. Methods Twenty-one studies for the pooled prevalence, and 11 out of the 21 studies for genetic characterization of norovirus were included. Studies conducted since 2006, among symptomatic cases of all age groups in Africa, conducted with any study design, used molecular diagnostic methods and reported since 2015, were included and considered for the main meta-analysis. PubMed, Cochrane Library, and Google Scholar were searched to obtain the studies. The quality the studies was assessed using the JBI assessment tool. Data from studies reporting both asymptomatic and symptomatic cases, that did not meet the inclusion criteria were reviewed and included as discussion points. Data was entered to excel and imported to STATA 2011 to compute the prevalence and genetic diversity. Heterogeneity was checked using I2 test statistics followed by subgroup and sensitivity analysis. Publication bias was assessed using a funnel plot and eggers test that was followed by trim and fill analysis. Result The pooled prevalence of norovirus was 20.2% (95% CI: 15.91, 24.4). The highest (36.3%) prevalence was reported in Ghana. Genogroup II noroviruses were dominant and reported as 89.5% (95% CI: 87.8, 96). The highest and lowest prevalence of this genogroup were reported in Ethiopia (98.3%), and in Burkina Faso (72.4%), respectively. Diversified genotypes had been identified with an overall prevalence of GII. 4 NoV (50.8%) which was followed by GII.6, GII.17, GI.3 and GII.2 with a pooled prevalence of 7.7, 5.1, 4.6, and 4.2%, respectively. Conclusion The overall pooled prevalence of norovirus was high in Africa with the dominance of genogroup II and GII.4 genotype. This prevalence is comparable with some reviews done in the same time frame around the world. However, in Africa, an in increasing trained of pooled prevalence had been reported through time. Likewise, a variable distribution of non-GII.4 norovirus genotypes were reported as compared to those studies done in the world of the same time frame, and those previous reviews done in Africa. Therefore, continuous surveillance is required in Africa to support future interventions and vaccine programs.

Background Tuberculosis presents a heightened threat to community health throughout the world but disproportionately afflicts low-income nations. In Ethiopia, TB is a significant health problem in children causing significant morbidity and mortality. Therefore, this study aimed to determine the prevalence, risk factors, and rifampicin resistance of pulmonary tuberculosis among children. Methods A hospital-based cross-sectional study was conducted on 384 children less than 15 years of age at Debre Markos Referral Hospital from February to May 2019. Sputum and gastric lavage samples were used to detect Mycobacterium tuberculosis and its rifampicin resistance pattern. MTB/RIF GeneXpert assay was used for the laboratory diagnosis. Results The prevalence of pulmonary tuberculosis and rifampicin resistance was 22 (5.73%) and 2 (0.52%), respectively. Educational status of the family (P = 0.02; AOR = 4.12; CI = 1.28–13.15), residence (P = 0.04; AOR = 3.09; CI =1.05–9.06), history of tuberculosis contact (P ≤ 0.001; AOR = 14.78; CI = 4.43–49.26), HIV infection (P ≤ 0.001; AOR = 5.51; CI = 1.72–17.7), malnourished status (P = 0.01; AOR = 4.11; CI = 1.33–12.65), duration of cough greater than 3 weeks (P = 0.04; AOR = 3.2; CI = 11.05–9.78), weight loss (P ≤ 0.001; AOR = 307.8; CI = 32–2980), and children with mucoid sputum (P = 0.02; AOR = 3.76; CI = 1.2–12.2) were significantly associated with tuberculosis infection. Conclusion This study showed a high prevalence of pulmonary tuberculosis infection among children. Residence, educational status of the family, contact history with tuberculosis cases, HIV, and malnutrition were risk factors for tuberculosis infection. Therefore, periodic surveillance of tuberculosis and assessing risk factors among children should be addressed. Moreover, a regular large scale survey should be conducted to assess the burden and intervene accordingly.

Background Under-nutrition remains a major global public health challenge, particularly among children under the age of five. Among the manifestations of under-nutrition, stunting accounts for the larger proportion, which is associated with multiple factors. In Ethiopia, however, the link between intestinal inflammation and childhood stunting was not well investigated. Therefore, the present study aimed to determine the association between gut inflammation and childhood stunting. Method A community-based cross-sectional study was conducted and a total of 82 children were included in the study. Anthropometric data were collected by measuring weight in underwear and without shoes with an electronic scale to the nearest 0.1 kg and their height in the Frankfort plane with a telescopic height instrument. Environmental risk factors for enteric bacterial exposure, access to improved sources of drinking water, and the presence of facilities for hygiene and sanitation conditions were assessed using a questionnaire. Gut inflammation was tested through fecal leukocyte count and each sample was stained with methylene blue. Stool samples were inoculated on MacConkey agar, Salmonella-Shigella agar, and Xylose Lysine Deoxycholate agar after enrichment with Selenite cystine broth and incubated at 37 °C for 18–24 h. Binary and multiple logistic regressions and Chi-square models were used to analyze the data. Result Data from the current study revealed that gut inflammation was (AOR: 5.28, 95% CI: 1.32–22.25) associated with stunting. On the other hand, children with reported diarrhea within the last week were 6 times more likely for the probability of being stunted (AOR: 6.21, 95% CI: 2.68–26.83). The findings of this study also demonstrated that children from a household with a family size of more than 5 members were three times more likely to be stunted than their counterparts (AOR: 3.21, 95% CI: 1.20 -10.13). Facts of the current study demonstrated that breastfeeding for 24 months and below was negatively associated (AOR: 0.3; 95% CI: -0.46-0.89) with gut inflammation. Detection of E.coli and Shigella species in the stool samples of children and Menaheria residents were positively associated with gut inflammation (AOR: 5.4, 95% CI: 1.32–22.25; AOR: 5, 95% CI: 1.47–24.21), respectively. Conclusion Therefore, there was a strong correlation between stunting and gastrointestinal inflammation. Moreover, stunting was associated with diarrhea, breastfeeding duration, residence, and family size. Similarly, intestinal inflammation was linked to residence, breastfeeding duration, and the prevalence of bacterial infections such as E. coli and Shigella species.

Background: Surgical site infection is the third most commonly reported nosocomial infection. Different primary studies on Surgical site infection (SSI) were conducted in Ethiopia. However, variation among those studies was seen. This study was aimed to estimate the national prevalence of SSI, its bacterial profile and associated factors of SSI in Ethiopia. Methods: PubMed, Cochrane library, and Google Scholar were searched. A funnel plot and Egger’s regression test were used to see publication bias. I-squared statistic was applied to check heterogeneity of studies. A weighted inverse variance random-effects model was applied to estimate the national prevalence of SSI, its bacterial profile and the effect size of associated factors. The subgroup analysis was conducted by region, study design, and year of study conducted. Result: A total of 18 studies were used for prevalence of SSI, its bacterial profile and associated factors. The pooled prevalence of SSI was 11.58 (95% CI 9.78, 13.38). The pooled prevalence of culture positive SSI infection among patients who develop clinical sign and symptoms of SSI was also 80.42% (95% CI 70.86, 89.99). SSI was majorly caused by S. aureus (28.47%) and E. coli (15.93%). Drinking an alcohol (AOR = 6.28; 95%CI: 2.9–13.3); women’s having chorioaminities (AOR = 8.67; 95%CI: 4.63–16.27); patients living in rural areas (AOR = 3.10; 95%CI: 1.57–6.14); patients who undergo previous surgery (AOR = 3.94; 95%CI: 1.7–7.17) and women’s who had rupture of membrane >12 hour (AOR=5.29; 95%CI: 2.73–10.25) were identified factors of SSI. Conclusions: The prevalence of SSI in Ethiopia was high. This indicates calling for the need of better allocating resources and implementing a program for controlling Surgical site infections in Ethiopia.

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