ABSTRACT
On August 14, 2024, the Director General of the World Health Organization (WHO) declared that the increasing outbreaks of mpox (formerly monkeypox) should be regarded as an international public health emergency due to the growing number of cases in endemic and non-endemic geographical areas, and increasing disease severity. The latest update from the WHO and the alerts given regarding the status of mpox follows an upsurge in the incidence and severity of mpox in the Democratic Republic of the Congo (DRC) and an increasing number of African countries, with spread to other continents and countries This Editorial aims to provide an update on the current status of mpox and includes reasons for the increasing global concerns for the spread of the mpox virus (MPXV).
Subject(s)
Disease Outbreaks , Global Health , Mpox (monkeypox) , World Health Organization , Humans , Mpox (monkeypox)/epidemiology , Mpox (monkeypox)/transmission , Monkeypox virus/pathogenicity , Public Health , Africa/epidemiology , Incidence , Democratic Republic of the Congo/epidemiologyABSTRACT
Human rabies transmitted by dogs still kills thousands of people each year worldwide. Dog bites are common in the city of Beni (Democratic Republic of Congo), which shows low rabies vaccination coverage. This study aimed to determine the factors associated with the rabies vaccination status of dogs. A cross-sectional analytical study was conducted in the town of Beni among dog owners, during a household survey selected using a multistage sampling. The information sought concerned the knowledge and characteristics of the dog owners as well as the vaccination status of these dogs. Logistic regression was used to investigate associations between the vaccination status of the dogs and the main independent factors. Rabies vaccination coverage in Beni was 26% (95% confidence interval [CI]: 22% - 30%). The main factors associated with the rabies vaccination status of the dog were primary education level of household head (adjusted odds ratio [aOR]:4.8; 95% CI: 1.2- 19.8); university education level of household head (aOR: 5.9; 95% CI: 1.6-22); perceived rabies severity (aOR: 44. 4; 95% CI: 10.4-188), having more than one dog in the household (aOR: 2.6; 95% CI: 1.6-4.3); age range 7-12 months (aOR: 0.2; 95% CI: 0.1-0.6) and confined dog breeding (aOR: 3.9; 95% CI: 1.1-14.9). The low vaccination coverage in Beni requires mass vaccination campaigns against canine rabies targeting the dog owners with low education levels, those raising more than one dog, with stray dogs or dogs less than 12 months old.
Subject(s)
Dog Diseases , Rabies Vaccines , Rabies , Dogs , Animals , Rabies/prevention & control , Rabies/veterinary , Rabies/epidemiology , Dog Diseases/prevention & control , Dog Diseases/epidemiology , Cross-Sectional Studies , Rabies Vaccines/administration & dosage , Male , Female , Humans , Democratic Republic of the Congo/epidemiology , Vaccination/veterinary , Vaccination/statistics & numerical data , Adult , Middle Aged , Family Characteristics , Health Knowledge, Attitudes, Practice , Vaccination Coverage/statistics & numerical dataABSTRACT
BACKGROUND: The European Thyroid Association Thyroid Imaging Data and Reporting Systems (EU-TIRADS) is widely used in the risk stratification of thyroid nodule malignancy. However, data on the subject in Sub-Saharan Africa are limited. The objective of this study is to evaluate the clinical, sonographic and histopathological concordance of thyroid nodules in the diagnosis of thyroid cancer. METHODS: This was an analytical cross-sectional study that examined the clinical, ultrasound and pathological data of 61 patients from 4 hospitals in the city province of Kinshasa over a period of 24 months, from June 01, 2020 to May 31, 2022. RESULTS: Of the 61 patients, their mean age was 47.38 ± 8.8 years. The mean clinical score of the patients was 3.4 ± 0.84 with the extremes ranging from 1 to 5. The majority of the patients were classified as having an intermediate risk, ie 85.2% of the cases. It was noted that 41% of the nodules had a high risk according to the EU-TIRADS score and 8.2% of the nodules were malignant after histopathological analysis. The ROC curves reported at the diagnosis of malignancy show an area under the curve of 0.709 with 95% CI (0.486-0.931), a Youden index of 0.769 for the clinical score, and an area under the curve of 0.830 with 95% CI (0.605-0.995), a Youden index of 0.772 for the EU-TIRADS score. CONCLUSION: In a low-income country, a well-performed thyroid ultrasound and the well-applied clinical score could be an important tool in the selection of thyroid nodules suspected of malignancy and requiring histopathological examination to avoid excessive acts in the patient.
Subject(s)
Thyroid Neoplasms , Thyroid Nodule , Ultrasonography , Humans , Thyroid Nodule/pathology , Thyroid Nodule/diagnostic imaging , Cross-Sectional Studies , Male , Female , Middle Aged , Ultrasonography/methods , Democratic Republic of the Congo/epidemiology , Adult , Thyroid Neoplasms/pathology , Thyroid Neoplasms/diagnostic imaging , Thyroid Neoplasms/epidemiology , Prognosis , Thyroid Gland/pathology , Thyroid Gland/diagnostic imaging , Follow-Up StudiesABSTRACT
BACKGROUND: Sleeping sickness (gambiense human African trypanosomiasis, gHAT) is a vector-borne disease targeted for global elimination of transmission (EoT) by 2030. There are, however, unknowns that have the potential to hinder the achievement and measurement of this goal. These include asymptomatic gHAT infections (inclusive of the potential to self-cure or harbour skin-only infections) and whether gHAT infection in animals can contribute to the transmission cycle in humans. METHODS: Using modelling, we explore how cryptic (undetected) transmission impacts the monitoring of progress towards and the achievement of the EoT goal. We have developed gHAT models that include either asymptomatic or animal transmission, and compare these to a baseline gHAT model without either of these transmission routes, to explore the potential role of cryptic infections on the EoT goal. Each model was independently calibrated to five different health zones in the Democratic Republic of the Congo (DRC) using available historical human case data for 2000-2020 (obtained from the World Health Organization's HAT Atlas). We applied a novel Bayesian sequential updating approach for the asymptomatic model to enable us to combine statistical information about this type of transmission from each health zone. RESULTS: Our results suggest that, when matched to past case data, we estimated similar numbers of new human infections between model variants, although human infections were slightly higher in the models with cryptic infections. We simulated the continuation of screen-confirm-and-treat interventions, and found that forward projections from the animal and asymptomatic transmission models produced lower probabilities of EoT than the baseline model; however, cryptic infections did not prevent EoT from being achieved eventually under this approach. CONCLUSIONS: This study is the first to simulate an (as-yet-to-be available) screen-and-treat strategy and found that removing a parasitological confirmation step was predicted to have a more noticeable benefit to transmission reduction under the asymptomatic model compared with the others. Our simulations suggest vector control could greatly impact all transmission routes in all models, although this resource-intensive intervention should be carefully prioritised.
Subject(s)
Disease Eradication , Trypanosomiasis, African , Democratic Republic of the Congo/epidemiology , Trypanosomiasis, African/transmission , Trypanosomiasis, African/epidemiology , Trypanosomiasis, African/prevention & control , Animals , Humans , Trypanosoma brucei gambiense , Bayes Theorem , Tsetse Flies/parasitologyABSTRACT
Objectives: Maternal stress has long been associated with lower birthweight, which is associated with adverse health outcomes including many adult diseases. The underlying mechanisms remain elusive although changes in gene expression may play a role. Studies are only beginning to test how maternal stress impacts gene expression as reflected in the transcriptome. Materials and Methods: In a cohort of mothers and newborns in the eastern Democratic Republic of Congo (n=93), we studied the effects of four maternal stress measures (chronic stress, war trauma, sexual trauma, and general trauma) on the transcriptomes of maternal venous blood, newborn venous blood, and placental tissues, and on newborn birthweight. Maternal stress was investigated as independent measures, principal components, and clusters identified through machine learning. The transcriptome was assayed using the ClariomD chip. Multiple regression models were used to test for associations between maternal stress measures, the transcriptome, and newborn birthweight. Results: None of the maternal stress measures showed an association with expression of individual genes. In contrast, when testing global gene expression, war trauma was significantly associated with the placental transcriptome. War trauma was also significantly associated with birthweight in multiple models. Mediation analysis indicated that ~14% of the effect of war trauma on birthweight was mediated by a placental gene expression component. Discussion: Our results suggest that gene expression in the placenta, which represents the interface between mother and developing fetus, may partially mediate the negative impact of maternal stress on newborn birthweight.
Subject(s)
Birth Weight , Humans , Democratic Republic of the Congo/epidemiology , Female , Infant, Newborn , Birth Weight/genetics , Pregnancy , Adult , Stress, Psychological/genetics , Placenta/metabolism , Transcriptome , Young Adult , Gene ExpressionABSTRACT
BACKGROUND: Maternal mortality (MM) remains a real scourge that hits hardest in the poorest regions of the world, particularly those affected by conflict. However, despite this worrying reality, few studies have been conducted about MM ratio in the Democratic Republic of Congo (DRC). The study aimed to describe the trends as well as the epidemiological profile and causes of reported institutional maternal deaths between 2013 and 2022 in Eastern DRC. METHODS: A retrospective descriptive study was conducted between March 2023 and August 2023 in eight Health Zones (HZ), five in South Kivu Province (Mwana, Minova, Miti-Murhesa, Kamituga and Idjwi) and three in North Kivu Province (Kirotshe, Karisimbi and Kayna) in the eastern region of the DRC. Our study covers 242 health facilities: 168 health centers (HC), 16 referral health centers (RHCs),50 referral hospitals (RH) and 8 general referral hospitals (GRHs). Data from registers and medical records of maternal deaths recorded in these zones from 2013-2022 were extracted along with information on the number of deliveries and live births. Sociodemographic, clinical parameters, blood and ultrasound tests and suspected causes of death between provinces were assessed. RESULTS: In total, we obtained 177 files on deceased women. Of these, 143 (80.8%) were retained for the present study, including 75 in the 3 HZs of North Kivu and 68 in the 5 HZs of South Kivu. From 2013 to 2022, study sites experienced two significant drops in maternal mortality ratio (MMR) (in 2015 and 2018), and a spike in 2016-2017. Nonetheless, the combined MMR (across study sites) started and ended the 10-year study period at approximately the same level (53 and 57 deaths per 100,000 live births in 2013 and 2022 respectively). Overall, 62,6% of the deaths were reported from secondary hospital. Most deaths were of married women in their thirties (93.5%). Almost half (47.8%) had not completed four antenatal consultations. The main direct causes of death were, in decreasing order of frequency: post-partum haemorrhage (55.2%), uterine rupture (14.0), hypertensive disorders (8.4%), abortion (7.7%) puerperal infections (2.8%) and placental abruption (0.7%). When comparing among provinces, reported abortion-related maternal mortality (14.1% vs 0%) was more frequent in North Kivu than in South Kivu. CONCLUSION: This study imperatively highlights the need for targeted interventions to reduce maternal mortality. By emphasizing the crucial importance of antenatal consultations, intrapartum/immediate post-partum care and quality of care, significant progress can be made in guaranteeing maternal health and reducing many avoidable deaths.
Subject(s)
Cause of Death , Maternal Mortality , Humans , Democratic Republic of the Congo/epidemiology , Maternal Mortality/trends , Female , Retrospective Studies , Adult , Pregnancy , Cause of Death/trends , Young Adult , Adolescent , Middle AgedABSTRACT
PURPOSE: This study describes the experience with common neonatal surgical conditions and their outcomes at a single center in the Eastern Democratic Republic of the Congo (DRC) over a period of 7 years (2016-2022). METHODS: A retrospective review of neonatal surgical admissions and their outcomes was performed for patient admitted between January 2016 and December 2022 at HEAL Africa teaching hospital. Data were collected from the neonatal admission and discharge registry for all patients with a potential surgical condition. RESULTS: 107 neonates potentially requiring surgery were identified. 81.3% were referred from facilities within 10 km of HEAL Africa. The most common diagnosis was myelomeningocele/meningocele (27.1%). 68.2% of patients had an operation. The overall mortality was 29% for all patients and mean length of stay 9.9 days. Operated patients had a lower mortality at 16.4% (p-value < 0.001, OR 0.155, CI 0.062-0.389) while patients with a birth weight of less than 2500 g were more likely to die (p-value < 0.001, OR 5.333, CI 2.062-13.79). CONCLUSION: The neonatal mortality rate for patients presenting with a potential surgical condition is extremely high. This is multifactorial and largely related to patient selection inherent to resource limitations.
Subject(s)
Infant Mortality , Tertiary Care Centers , Humans , Democratic Republic of the Congo/epidemiology , Infant, Newborn , Retrospective Studies , Female , Male , Infant Mortality/trends , Tertiary Care Centers/statistics & numerical data , Surgical Procedures, Operative/statistics & numerical data , Surgical Procedures, Operative/mortality , Infant , Resource-Limited SettingsABSTRACT
BACKGROUND: Worldwide, around 73 million induced abortions take place every year. Of these, 45% are unsafe and can lead to complications. The evolution of the legal and practical landscape of abortion in the Democratic Republic of the Congo (DRC) over the last few years necessitates a re-examination of the experience of induced abortion, leading this study to measure the incidence of abortion among young women (15 to 29 years of age), as well as the heterogeneity of this problem according to the residence of these young women (slum vs. non-slum areas). METHODOLOGY: We used representative survey data on women aged 15-49 in Kinshasa, collected from December 2021 to April 2022. The survey included questions about the respondents' and their closest confidants' experience of induced abortion, including the methods and sources used. We estimated abortion incidence and heterogeneity over one year based on residence in the city of Kinshasa according to sociodemographic characteristics. RESULTS: The fully adjusted one-year friend abortion rate in 2021 was 131.5 per 1000 (95% CI: IQR 99.4-163.6). These rates were significantly higher than the corresponding estimates of respondents. The incidence of induced abortion for respondents was 24.4 per 1000 (95% CI: 15.8-32.9) abortions per 1000 women. The incidence rates of induced abortion were much higher among the respondents residing in slums than among those residing in non-slums (29.2 vs. 13.0 per 1000; p < 0.001). Slum respondents indicated higher use of non-recommended methods than non-slum respondents. CONCLUSIONS: More precise estimates of the incidence of abortion indicate that the incidence rate of abortion was higher among young women residing in slums who were unmarried and had no children. These incidences were higher among confidants than among respondents. There is still a lot of work to be done to fulfill the obligations outlined in the Maputo Protocol. The aim is to decrease the occurrence of unsafe abortions and their associated effects.
Subject(s)
Abortion, Induced , Poverty Areas , Humans , Female , Democratic Republic of the Congo/epidemiology , Adult , Adolescent , Young Adult , Incidence , Abortion, Induced/statistics & numerical data , Middle Aged , Pregnancy , Urban Population/statistics & numerical dataABSTRACT
BACKGROUND: Many European countries experienced outbreaks of mpox in 2022, and there was an mpox outbreak in 2023 in the Democratic Republic of Congo. There were many apparent differences between these outbreaks and previous outbreaks of mpox; the recent outbreaks were observed in men who have sex with men after sexual encounters at common events, whereas earlier outbreaks were observed in a wider population with no identifiable link to sexual contacts. These apparent differences meant that data from previous outbreaks could not reliably be used to parametrise infectious disease models during the 2022 and 2023 mpox outbreaks, and modelling efforts were hampered by uncertainty around key transmission and immunity parameters. METHODS: We developed a stochastic, discrete-time metapopulation model for mpox that allowed for sexual and non-sexual transmission and the implementation of non-pharmaceutical interventions, specifically contact tracing and pre- and post-exposure vaccinations. We calibrated the model to case data from Berlin and used Sobol sensitivity analysis to identify parameters that mpox transmission is especially sensitive to. We also briefly analysed the sensitivity of the effectiveness of non-pharmaceutical interventions to various efficacy parameters. RESULTS: We found that variance in the transmission probabilities due to both sexual and non-sexual transmission had a large effect on mpox transmission in the model, as did the level of immunity to mpox conferred by a previous smallpox vaccination. Furthermore, variance in the number of pre-exposure vaccinations offered was the dominant contributor to variance in mpox dynamics in men who have sex with men. If pre-exposure vaccinations were not available, both the accuracy and timeliness of contact tracing had a large impact on mpox transmission in the model. CONCLUSIONS: Our results are valuable for guiding epidemiological studies for parameter ascertainment and identifying key factors for success of non-pharmaceutical interventions.
Subject(s)
Mpox (monkeypox) , Humans , Male , Mpox (monkeypox)/epidemiology , Mpox (monkeypox)/transmission , Democratic Republic of the Congo/epidemiology , Female , Disease Outbreaks , Epidemics , Sexual Behavior , Contact Tracing , Homosexuality, MaleABSTRACT
BACKGROUND: Safely managed drinking water is critical to prevent diarrhoeal diseases, including cholera, but evidence on the effectiveness of piped water supply in reducing these diseases in low-income and complex emergency settings remains scarce. METHODS: We conducted a trial of water supply infrastructure improvements in Uvira (DRC). Our primary objective was to estimate the relationship between a composite index of water service quality and the monthly number of suspected cholera cases admitted to treatment facilities and, as a secondary analysis, the number of cases confirmed by rapid diagnostic tests. Other exposures included the quantity of supplied water and service continuity. We used Poisson generalised linear models with generalised estimating equations to estimate incidence rate ratios. FINDINGS: Associations between suspected cholera incidence and water service quality (RR 0·86, 95% CI 0·73-1·01), quantity (RR 0·80, 95% CI 0·62-1·02) and continuity (RR 0·81, 95% CI 0·77-0·86) were estimated. The magnitudes of the associations were similar between confirmed cholera incidence and water service quality (RR 0·84, 95% CI 0·73-0·97), quantity (RR 0·76, 95% CI 0·61-0·94) and continuity (RR 0·75, 95% CI 0·69-0·81). These results suggest that an additional 5 L/user/day or 1.2 hour per day of water production could reduce confirmed cholera by 24% (95% CI 6-39%) and 25% (95% CI 19-31%), respectively. INTERPRETATION: Ensuring a sufficient and continuous piped water supply may substantially reduce the burden of endemic cholera and diarrhoeal diseases but evaluating this rigorously is challenging. Pragmatic strategies are needed for public health research on complex interventions in protracted emergency settings. TRIAL REGISTRATION: The trial is registered in ClinicalTrials.gov ID NCT02928341. https://classic.clinicaltrials.gov/ct2/show/NCT02928341.
Subject(s)
Cholera , Diarrhea , Water Supply , Adolescent , Adult , Child , Child, Preschool , Female , Humans , Infant , Male , Middle Aged , Young Adult , Cholera/prevention & control , Cholera/epidemiology , Democratic Republic of the Congo/epidemiology , Diarrhea/prevention & control , Diarrhea/epidemiology , Drinking Water/microbiology , Incidence , Water Quality , Water Supply/standardsABSTRACT
BACKGROUND: The Corona Virus Disease 2019 (COVID-19) pandemic overwhelmed health systems and disrupted the delivery of health services globally. Community Health Workers (CHWs) play a critical role in linking communities to health systems, supporting the prevention and control of diseases in many low- and middle-income countries. However, their roles, barriers, and facilitators in the response and control of the COVID-19 pandemic have not been well documented. We described the roles of CHWs in the COVID-19 response, including the barriers and facilitators. METHODS: A cross-sectional study design was used to assess the COVID-19 response in the Democratic Republic of Congo (DRC), Nigeria, Senegal, and Uganda. This involved 110 key informant interviews with policymakers, health facility managers, district health managers, and CHWs to understand the role of CHWs in the COVID 19 response, selected purposively. The total sample size was based on information saturation in each of the countries. A document review on the COVID-19 response was also conducted. We searched Google, Google Scholar, and PubMed for published and grey literature. Data from the selected documents were extracted into a Google master matrix in MS Excel and analyzed thematically. RESULTS: In COVID-19 Control, CHWs supported community-based surveillance, contact tracing, risk communication, community mobilization, and home-based care. To support the continuity of other non-COVID-19 services, the CHWs conducted community mobilization, sensitizations, outreaches, referrals, and patient follow-ups. CHWs were challenged by movement restrictions, especially in the initial stages of the lockdown, inadequate PPE, increased workload, low allowances, and motivation. CHW were facilitated by trainings, the development of guidelines, development partners' support/funding, and the provision of personal protective equipment (PPE) and tools. CONCLUSION: CHWs supported both the COVID-19 control and continuity of non-COVID-19 health care during the COVID-19 pandemic. CHWs are a critical resource that must be adequately supported to build resilient health systems.
Subject(s)
COVID-19 , Community Health Workers , Humans , COVID-19/epidemiology , COVID-19/prevention & control , Cross-Sectional Studies , Nigeria/epidemiology , Uganda/epidemiology , Democratic Republic of the Congo/epidemiology , Senegal/epidemiology , SARS-CoV-2 , Professional Role , Pandemics/prevention & controlSubject(s)
Epidemics , Mpox (monkeypox) , Humans , Democratic Republic of the Congo/epidemiology , Mpox (monkeypox)/epidemiology , Female , MaleABSTRACT
BACKGROUND: Chronic infection with Schistosoma haematobium causes female genital schistosomiasis (FGS), which leads to diverse lesions in the female genital tract and several complications, including infertility and a higher risk for HIV transmission. This study aims to understand the knowledge, attitudes, and practices (KAP) toward FGS and associated factors among women and health professionals in the schistosomiasis endemic focus of Kimpese, western Democratic Republic of Congo (DRC). METHODS: In January 2022, two semi-quantitative questionnaires were administered to 201 randomly selected community women in Kifua II village, and to purposely selected health professionals (20 nurses and 41 doctors) from Kimpese Health Zone. KAP statements were coded using Likert scale, summarized as frequencies and percentages, and assessed for internal reliability using Cronbach's alpha. Associations between the socio-demographic characteristics of respondents and the KAP variables were assessed using Pearson chi-square (χ2) test, Cramer's V (φ) and gamma (γ) coefficients. RESULTS: Overall, respondents had high knowledge of schistosomiasis in general but low FGS-specific knowledge (91% versus 45%). Misconceptions concerned the disease transmission, with 30.3% of women and 25% of the nurses believing that FGS is transmitted by drinking untreated water, while 26.8% of the doctors mentioned sexual contact as a mode of FGS transmission. Negative attitudes included considering FGS not a very serious disease (34.8%), feeling uncomfortable during gynaecological examination (35.3%), difficulties avoiding risky water contact (72.1%) and open defecation/urination (41.3%), not intending to share FGS status with their husbands (38.3%) and loved ones (63.6%), and believing that husbands would leave them if they were infertile (31.8%). Regarding practices, 77.6% of women engaged daily in activities involving contact with water. Practices of health professionals were hampered by the lack of equipment and specialized knowledge for FGS diagnosis with only 57% of healthcare workers having a microscope in their facilities. Women's KAPs varied by age, education, marital status, occupation and monthly income. CONCLUSION: This study highlights insufficient knowledge, existing negative attitudes, at risk practices towards FGS by women, and limitations of FGS management by health professionals. These findings can help for tailored health education and WASH strategies, and call for health professional's capacities reinforcement.
Subject(s)
Health Knowledge, Attitudes, Practice , Health Personnel , Schistosomiasis haematobia , Humans , Female , Democratic Republic of the Congo/epidemiology , Adult , Young Adult , Middle Aged , Surveys and Questionnaires , Health Personnel/psychology , Schistosomiasis haematobia/epidemiology , Adolescent , Schistosoma haematobium , Animals , Cross-Sectional StudiesABSTRACT
OBJECTIVES: HIV-infected individuals are at increased risk of neurocognitive disorders compared with the general population. Studies suggest that, despite the combination of antiretroviral drugs, HIV infection causes immune activation leading to significant neural damage; however, there is little data on HIV-infected young people in our country. METHODOLOGY: This is a comparative cross-sectional study conducted between November 2020 and March 2021 on two hundred and sixteen children aged 6-15 years, including 106 HIV-positive children and 108 healthy children. Cognitive performance was assessed using the Differential Ability Scale Second Edition (DAS-II). RESULTS: HIV-infected children showed lower cognitive scores than control children in the subtest group of verbal ability (82.1% vs. 43.5%); non-verbal ability (84.9% vs. 45.4%); spatial ability (79.2% vs. 21.3%) and generall conceptual ability (GCA) (88.7% vs. 43.5%). The children in the control group had significantly higher ability scores in the diagnostic tests and in school achievement, and the difference was statistically significant. CONCLUSION: Cognitive impairment remains a significant complication in HIV-positive children, as suggested by low cognitive scores in more than half of our participants. This is an unresolved issue with implications for survival, quality of life and daily functioning in these children. It is important that clinicians are able to identify and manage these cognitive deficits.
Subject(s)
Cognitive Dysfunction , HIV Infections , Humans , Child , Cross-Sectional Studies , Male , Female , Adolescent , HIV Infections/complications , HIV Infections/epidemiology , HIV Infections/drug therapy , Democratic Republic of the Congo/epidemiology , Cognitive Dysfunction/epidemiologyABSTRACT
We evaluated the spatiotemporal clustering of rapid diagnostic test-positive cholera cases in Uvira, eastern Democratic Republic of the Congo. We detected spatiotemporal clusters that consistently overlapped with major rivers, and we outlined the extent of zones of increased risk that are compatible with the radii currently used for targeted interventions.
Subject(s)
Cholera , Spatio-Temporal Analysis , Cholera/epidemiology , Democratic Republic of the Congo/epidemiology , Humans , History, 21st Century , Cluster AnalysisABSTRACT
Following the apparent final case in an Ebola virus disease (EVD) outbreak, the decision to declare the outbreak over must balance societal benefits of relaxing interventions against the risk of resurgence. Estimates of the end-of-outbreak probability (the probability that no future cases will occur) provide quantitative evidence that can inform the timing of an end-of-outbreak declaration. An existing modeling approach for estimating the end-of-outbreak probability requires comprehensive contact tracing data describing who infected whom to be available, but such data are often unavailable or incomplete during outbreaks. Here, we develop a Markov chain Monte Carlo-based approach that extends the previous method and does not require contact tracing data. Considering data from two EVD outbreaks in the Democratic Republic of the Congo, we find that data describing who infected whom are not required to resolve uncertainty about when to declare an outbreak over.
Subject(s)
Disease Outbreaks , Hemorrhagic Fever, Ebola , Hemorrhagic Fever, Ebola/epidemiology , Hemorrhagic Fever, Ebola/prevention & control , Democratic Republic of the Congo/epidemiology , Humans , Ebolavirus , Markov Chains , Monte Carlo MethodABSTRACT
Important policy questions during infections disease outbreaks include: i) How effective are particular interventions?; ii) When can resource-intensive interventions be removed? We used mathematical modelling to address these questions during the 2017 Ebola outbreak in Likati Health Zone, Democratic Republic of the Congo (DRC). Eight cases occurred before 15 May 2017, when the Ebola Response Team (ERT; co-ordinated by the World Health Organisation and DRC Ministry of Health) was deployed to reduce transmission. We used a branching process model to estimate that, pre-ERT arrival, the reproduction number was R = 1.49 (95% credible interval ( 0.67, 2.81 ) ). The risk of further cases occurring without the ERT was estimated to be 0.97 (97%). However, no cases materialised, suggesting that the ERT's measures were effective. We also estimated the risk of withdrawing the ERT in real-time. By the actual ERT withdrawal date (2 July 2017), the risk of future cases without the ERT was only 0.01, indicating that the ERT withdrawal decision was safe. We evaluated the sensitivity of our results to the estimated R value and considered different criteria for determining the ERT withdrawal date. This research provides an extensible modelling framework that can be used to guide decisions about when to relax interventions during future outbreaks.
Subject(s)
Disease Outbreaks , Hemorrhagic Fever, Ebola , Hemorrhagic Fever, Ebola/epidemiology , Hemorrhagic Fever, Ebola/prevention & control , Humans , Disease Outbreaks/prevention & control , Democratic Republic of the Congo/epidemiology , Models, Theoretical , EbolavirusABSTRACT
INTRODUCTION: Limited data are available on the prevalence rates of hepatitis B and acquired immunodeficiency syndrome (AIDS) among women survivors of sexual violence (WSSV) in South Kivu province, in the eastern part of the Democratic Republic of Congo (DRC), where armed conflicts persist. Here, we aimed to assess the prevalence of these two infections in this vulnerable local population. METHODS: A total of 1002 WSSV, aged from 18 to 70 years old were enrolled from May 2018 to May 2020 at three healthcare facilities (Panzi, Mulamba and Bulenga hospitals), which are called "The One-Stop Centre Care Model" for the management of sexual violence in South Kivu. Blood samples were collected and tested for hepatitis B virus (HBV) and human immunodeficiency virus (HIV) antigens and antibodies using enzyme-linked immunoassay (ELISA) methods. Subsequently, viral load quantification for HBV and HIV were performed using the GeneXpert. Univariate and multivariate logistic regression models were used to assess factors associated with HIV-positive and HBV-positive status. RESULTS: For HBV, overall prevalence was 8.9% (95% CI; 7.2-10.8%), 32.1% (95% CI; 29.3-35.0%), and 14.5% (95% CI; 12.3-16.8%) for HBsAg, anti-HBc and anti-HBs antibodies, respectively. Among the 89 HBsAg-positive patients, 17 (19.1%) were HBeAg-positive. The median age of individuals with a positive HBsAg test was higher than those with a negative test (median: 40 years (IQR 30-52) compared to 36 years (IQR 24-48)). Risk factors for HBV infection were age (≥35 years) (AOR = 1.83 [1.02-3.32]; p = 0.041), having no schooling (AOR = 4.14 [1.35-12.62]; p = 0.012) or only primary school-level (AOR = 4.88 [1.61-14.75]; p = 0.005), and multiple aggressors (AOR = 1.76 [1.09-2.84], p = 0.019). The prevalence of HIV was 4.3% [95% CI: 3.1-5.7%]. HIV/HBV co-infection occurred only in 5 individuals (0.5%). The HBV viral load was detectable (> 1 log10 UI/mL) in 61.8% of HBsAg-positive subjects and 64.8% HIV-positive subjects had a high viral load (≥ 3 log10 copies/mL). CONCLUSION: This study revealed a high prevalence of HBV and HIV infections among WSSV in South Kivu. The results generated highlight the urgent need for systematic screening of HBV and HIV by integrating fourth-generation ELISA tests in HIV and HBV control programs.
Subject(s)
HIV Infections , Hepatitis B , Sex Offenses , Humans , Female , Adult , Democratic Republic of the Congo/epidemiology , Hepatitis B/epidemiology , Middle Aged , Prevalence , HIV Infections/epidemiology , Adolescent , Young Adult , Sex Offenses/statistics & numerical data , Aged , Survivors , Hepatitis B virus/isolation & purification , Hepatitis B virus/immunology , Viral LoadABSTRACT
Mpox (monkeypox) is a neglected tropical disease that has received increased attention since the multi-nation outbreak that began in 2022. The virus is endemic in West and Central Africa, where the Democratic Republic of the Congo (DRC) is the most affected country. Clade I monkeypox virus (MPXV) infection is endemic in the DRC and has an overall case fatality rate of 10.6% among children and adults. A study conducted in Sankuru Province, DRC, from 2007 to 2011 demonstrated that 75% of pregnant women with mpox had miscarriages or stillbirth. Further analysis of a stillborn fetus showed that MPXV could infect both the placenta and fetus, causing congenital infection. No additional cases of Clade I MPXV in pregnant women were reported until a new outbreak occurred in South Kivu Province during 2023 and 2024. Eight pregnant women having Clade I MPXV infection were identified, of whom four had either miscarriages or stillbirth, representing a 50% fetal mortality rate. These reports confirm previous data from the DRC that indicate the capability of Clade I MPXV to affect the fetus, causing congenital infection and fetal loss in a high percentage of cases. In this article, we review both past and new data from the DRC on the effects of Clade I MPXV during pregnancy and discuss the association of mpox with fetal loss.
Subject(s)
Abortion, Spontaneous , Disease Outbreaks , Mpox (monkeypox) , Pregnancy Complications, Infectious , Stillbirth , Humans , Female , Pregnancy , Stillbirth/epidemiology , Democratic Republic of the Congo/epidemiology , Abortion, Spontaneous/epidemiology , Adult , Mpox (monkeypox)/epidemiology , Mpox (monkeypox)/virology , Pregnancy Complications, Infectious/epidemiology , Pregnancy Complications, Infectious/virology , Monkeypox virus/genetics , Young AdultABSTRACT
Sexual violence (SV) is a major public health issue in Goma, Democratic Republic of the Congo, especially in the eastern part of the country where women have been victims of SV for many years. The objective of this study is to provide an overview of the survivor and perpetrator characteristics, as well as the circumstances surrounding SV incidents in Goma. We conducted a retrospective, descriptive cross-sectional study using data from all SV survivors who sought medical care at four hospitals in Goma from January 2019 to December 2020. The analysis of the data was carried out using STATA 16 software. A total of 700 women sought medical attention for SV in the four hospitals. The survivors' age range was 12-67 years with a mean age of 31.7 ± 14.6 years. Women aged 20-29 years were the most affected (28%). The majority of SV survivors experienced their first assault (88.29%) and sought medical attention within 72 h (60.6%). The assaults occurred mostly outside the SV survivors' homes under armed threat (84.29%), predominantly by men in civilian clothes (61.43%) compared to men in military uniform (38.57%). More than half of the survivors were assaulted by a stranger (64.71%), and of those, more than half were committed by a single perpetrator (57.29%). The findings underscore the urgent need to address this pervasive issue, emphasizing the necessity of targeted interventions to protect survivors and prevent future incidents. The circumstances surrounding these assaults, such as the prevalence of armed threats and attacks outside survivors' homes, highlight the complex challenges in combating SV in this region.