Community Wastewater-Based Surveillance Can Be a Cost-Effective Approach to Track COVID-19 Outbreak in Low-Resource Settings: Feasibility Assessment for Ethiopia Context.

Wastewater surveillance systems have become an important component of COVID-19 outbreak monitoring in high-income settings. However, its use in most low-income settings has not been well-studied. This study assessed the feasibility and utility of wastewater surveillance system to monitor SARS-CoV-2 RNA in Addis Ababa, Ethiopia. The study was conducted at nine Membrane Bio-reactor (MBR) wastewater processing plants. The samples were collected in two separate time series. Wastewater samples and known leftover RT-PCR tested nasopharyngeal swabs were processed using two extraction protocols with different sample conditions. SARS-CoV-2 wastewater RT-PCR testing was conducted using RIDA GENE SARS-CoV-2 RUO protocol for wastewater SARS-CoV-2 RNA testing. Wastewater SARS-CoV-2 RNA RT-PCR protocol adaptation, optimization, and detection were conducted in an Addis Ababa, Ethiopia context. Samples collected during the first time series, when the national COVID-19 case load was low, were all negative. Conversely, samples collected during the second time series were all positive, coinciding with the highest daily reported new cases of COVID-19 in Ethiopia. The wastewater-based SARS-CoV-2 surveillance approach is feasible for Addis Ababa. The COVID-19 wastewater based epidemiological approach can potentially fill the evidence gap in distribution and dynamics of COVID-19 in Ethiopia and other low-income settings.

Vaccine Inequity and Hesitancy: A Vicious Cycle Undermining the Fight Against the COVID-19 Pandemic.

The world has come a long way in the fight against the COVID-19 pandemic by averting the initially feared humanitarian crisis and by producing effective vaccines in a record time. Paradoxically, more new daily cases are being reported today than when there was not any effective vaccine around. The success against the pandemic so far is dented by inadequate vaccine supply in most low-income countries and widespread vaccine hesitancy. By the end of 2021, only half of WHO Member States have reached the target of immunizing 40% of their populations, while only less than 10% of the population in low-income countries have received at least one dose of the vaccine. This happened while more than nine billion doses of the vaccines were administered globally, predominantly in rich countries. On the backdrop of these man-made factors, the evolution of highly mutated variants of the virus is causing more uncertainties than the pre-vaccine time. If the vaccine inequities and hesitancy are not properly addressed, we are likely to enter into the vicious cycle of inequitable vaccine distribution leading to low vaccination rates in most low-income countries where the majority of the world population resides. This will ultimately enhance sustained transmission of the virus, leading to evolution of new variants of concern. As the highly mutated variants are likely to infect both vaccinated and unvaccinated individuals, it will inevitably lead to major doubts in the effectiveness and acceptance of the vaccines. In this review, we present how this vicious cycle may prolong the pandemic and discuss the importance of concerted global action to tackle it.

Evidence Gaps and Challenges in the Fight Against COVID-19 in Africa: Scoping Review of the Ethiopian Experience.

BACKGROUND: Ethiopia, like many African countries, took immediate actions to contain the coronavirus disease (COVID-19) outbreak and its impacts. However, the pandemic control measures were not guided by robust local evidence and not tailored to national contexts. In this review, we aimed to evaluate the evidence gaps and challenges of COVID-19 control measures in Ethiopia during the early months of the pandemic. DESIGN: Scoping Review. DATA SOURCE: Searches were conducted in PubMed, LitCovid, Web of Sciences, Embase, MedRx, ChemRxiv, BioRx, and Google Scholar. ELIGIBILITY CRITERIA: Peer-reviewed or pre-print original research articles on COVID-19 from Ethiopia during a period of January 1, 2020 and October 10, 2020 were included in this review. RESULTS: Of 573 articles found, 64 were eligible for inclusion. However, only 25 of them were peer-reviewed; 78% (50/64) were based on cross-sectional descriptive studies. Most of the studies focused on human behavior and healthcare system; only 13 articles addressed epidemiology and clinical spectrum of COVID-19. The studies have revealed a good level of awareness and a favorable attitude by community and healthcare workers (HCWs) towards COVID-19 and its control. However, the practices of infection prevention were found to be low among HCWs and the community. The outbreak unfolded at a slower rate than initially feared but the impact of the counter measures against COVID-19 on the delivery of essential healthcare services was felt more than the direct impact of the pandemic. Moreover, the actions taken by the country did not appear to be tailored to the pattern of the outbreak and existing local evidence. The overall number of published COVID-19-related scientific articles from Ethiopia during the review period was found to be limited. CONCLUSION: COVID-19 control in Ethiopia was challenged by lack of robust local scientific evidence, and the pandemic control measures were not adapted to local context and the outbreak patterns. Thus, Ethiopia and other African countries should design culturally sensitive and locally acceptable public health interventions for COVID-19 and potential future outbreaks based on locally generated scientific evidence.

Seroepidemiology and model-based prediction of SARS-CoV-2 in Ethiopia: longitudinal cohort study among front-line hospital workers and communities.

BACKGROUND: Over 1 year since the first reported case, the true COVID-19 burden in Ethiopia remains unknown due to insufficient surveillance. We aimed to investigate the seroepidemiology of SARS-CoV-2 among front-line hospital workers and communities in Ethiopia. METHODS: We did a population-based, longitudinal cohort study at two tertiary teaching hospitals involving hospital workers, rural residents, and urban communities in Jimma and Addis Ababa. Hospital workers were recruited at both hospitals, and community participants were recruited by convenience sampling including urban metropolitan settings, urban and semi-urban settings, and rural communities. Participants were eligible if they were aged 18 years or older, had provided written informed consent, and were willing to provide blood samples by venepuncture. Only one participant per household was recruited. Serology was done with Elecsys anti-SARS-CoV-2 anti-nucleocapsid assay in three consecutive rounds, with a mean interval of 6 weeks between tests, to obtain seroprevalence and incidence estimates within the cohorts. FINDINGS: Between Aug 5, 2020, and April 10, 2021, we did three survey rounds with a total of 1104 hospital workers and 1229 community residents participating. SARS-CoV-2 seroprevalence among hospital workers increased strongly during the study period: in Addis Ababa, it increased from 10·9% (95% credible interval [CrI] 8·3-13·8) in August, 2020, to 53·7% (44·8-62·5) in February, 2021, with an incidence rate of 2223 per 100 000 person-weeks (95% CI 1785-2696); in Jimma Town, it increased from 30·8% (95% CrI 26·9-34·8) in November, 2020, to 56·1% (51·1-61·1) in February, 2021, with an incidence rate of 3810 per 100 000 person-weeks (95% CI 3149-4540). Among urban communities, an almost 40% increase in seroprevalence was observed in early 2021, with incidence rates of 1622 per 100 000 person-weeks (1004-2429) in Jimma Town and 4646 per 100 000 person-weeks (2797-7255) in Addis Ababa. Seroprevalence in rural communities increased from 18·0% (95% CrI 13·5-23·2) in November, 2020, to 31·0% (22·3-40·3) in March, 2021. INTERPRETATION: SARS-CoV-2 spread in Ethiopia has been highly dynamic among hospital worker and urban communities. We can speculate that the greatest wave of SARS-CoV-2 infections is currently evolving in rural Ethiopia, and thus requires focused attention regarding health-care burden and disease prevention. FUNDING: Bavarian State Ministry of Sciences, Research, and the Arts; Germany Ministry of Education and Research; EU Horizon 2020 programme; Deutsche Forschungsgemeinschaft; and Volkswagenstiftung.

COVID-19 in Ethiopia in the first 180 days: Lessons learned and the way forward

Within just nine months of its official identification by the World Health Organization, coronavirus disease 2019 (COVID-19) has caused 34 million confirmed infections and about 1 million deaths worldwide. The collateral damage and spill over effects to all sectors has caused severe social disruption and an economic crisis that the world was unprepared for. Despite the relentless global effort, the pandemic remains a serious threat to lives and livelihood. As a result, all countries are faced with the daunting task of balancing outbreak prevention strategies against efforts to save their economies. Nevertheless, almost every country now has months of local evidences about the pandemic that will support contextualized and measured actions. The number of confirmed cases and deaths attributable to COVID-19 in Ethiopia has steadily increased since the first reported case on 13 March 2020. Although the country has so far avoided the feared catastrophe, the true burden of the problem may be far beyond what has been reported due to limited testing capacity. With the current trends of widespread community transmission, COVID-19 remains a serious public health threat in the country. In addition, multiple human-related and environmental factors, combined with relaxed COVID-19 mitigation strategies, have put the country at a high epidemic risk. Thus, proactive and balanced measures based on local evidence should be taken to prevent the country from slipping into a dire public health crisis.

COVID-19 in Oromia Region of Ethiopia: a review of the first 6 months' surveillance data.

INTRODUCTION: Despite unrelenting efforts to contain its spread, COVID-19 is still causing unprecedented global crises. Ethiopia reported its first case on 13 March 2020 but has an accelerated case load and geographical distribution recently. In this article, we described the epidemiology of COVID-19 in Oromia Region, the largest and most populous region in Ethiopia, during the early months of the outbreak. METHODS: We analysed data from the COVID-19 surveillance database of the Oromia Regional Health Bureau. We included all reverse transcription-PCR-confirmed cases reported from the region between 13 March and 13 September 2020. RESULTS: COVID-19 was confirmed in 8955 (5.5%) of 164 206 tested individuals. The test positivity rate increased from an average of 1.0% in the first 3 months to 6.3% in August and September. About 70% (6230) of the cases were men; the mean age was 30.0 years (SD=13.3), and 90.5% were <50 years of age. Only 64 (0.7%) of the cases had symptoms at diagnosis. Cough was the most common among symptomatic cases reported in 48 (75.0%), while fever was the least. Overall, 4346 (48.5%) have recovered from the virus; and a total of 52 deaths were reported with a case fatality rate of 1.2%. However, we should interpret the reported case fatality rate cautiously since in 44 (84.6%) of those reported as COVID-19 death, the virus was detected from dead bodies. CONCLUSION: Despite the steady increase in the number of reported COVID-19 cases, Ethiopia has so far avoided the feared catastrophe from the pandemic due to the milder and asymptomatic nature of the disease. However, with the current pattern of widespread community transmission, the danger posed by the pandemic remains real. Thus, the country should focus on averting COVID-19-related humanitarian crisis through strengthening COVID-19 surveillance and targeted testing for the most vulnerable groups.