Background: In May 2010, a team of national and international organizations was assembled to investigate children’s deaths due to lead poisoning in villages in northwestern Nigeria.Objectives: Our goal was to determine the cause of the childhood lead poisoning outbreak, investigate risk factors for child mortality, and identify children < 5 years of age in need of emergency chelation therapy for lead poisoning.Methods: We administered a cross-sectional, door-to-door questionnaire in two affected villages, collected blood from children 2–59 months of age, and obtained soil samples from family compounds. Descriptive and bivariate analyses were performed with survey, blood lead, and environmental data. Multivariate logistic regression techniques were used to determine risk factors for childhood mortality.Results: We surveyed 119 family compounds. Of 463 children < 5 years of age, 118 (25%) had died in the previous year. We tested 59% (204/345) of children < 5 years of age, and all were lead poisoned (≥ 10 µg/dL); 97% (198/204) of children had blood lead levels (BLLs) ≥ 45 µg/dL, the threshold for initiating chelation therapy. Gold ore was processed inside two-thirds of the family compounds surveyed. In multivariate modeling, significant risk factors for death in the previous year from suspected lead poisoning included the age of the child, the mother’s work at ore-processing activities, community well as primary water source, and the soil lead concentration in the compound.Conclusion: The high levels of environmental contamination, percentage of children < 5 years of age with elevated BLLs (97%, > 45 µg/dL), and incidence of convulsions among children before death (82%) suggest that most of the recent childhood deaths in the two surveyed villages were caused by acute lead poisoning from gold ore–processing activities. Control measures included environmental remediation, chelation therapy, public health education, and control of mining activities.

IntroductionCholera outbreaks in rural communities are associated with high morbidity and mortality. Effective interventions to control these outbreaks require identification of source and risk factors for infection. In September, 2010 we investigated a cholera outbreak in Bashuri, a cholera naïve rural community in northern Nigeria to identify the risk factors and institute control measures.MethodsWe conducted an unmatched case-control study. We defined a case as any resident of Bashuri community two years and above with acute watery diarrhea with or without vomiting and a control as any resident two years and above without acute watery diarrhea and vomiting. We recruited 80 hospital-based cases and 80 neighborhood controls. We collected and analyzed data on demographic characteristics, clinical information and risk factors. Laboratory analysis was performed on 10 stool samples and 14 open-well samples.ResultsMean age was 29 years (± 20 years) for cases and 32 years (± 16 years) for controls; 38 (47.5%) of cases and 60 (75%) of controls were males. Compared to controls, cases were less likely to have washed hands with soap before eating (age-adjusted odds ratio (AAOR) = 0.27, 95% confidence interval (CI): 0.10-0.72) and less likely to have washed hands with soap after using the toilet (AAOR = 0.34, 95% CI: 0.15-0.75). Vibrio cholerae O1 was isolated from six stool samples but not from any open-well samples.ConclusionUnhygienic hand washing practices was the key risk factor in this outbreak. We educated the community on personal hygiene focusing on the importance of hand washing with soap.

High acceptance of COVID-19 vaccines is crucial to ending the COVID-19 pandemic. Healthcare workers (HCWs) are frontline responders in the fight against COVID-19, they were prioritized to receive the COVID-19 vaccine in Nigeria. This study assessed the acceptance of the COVID-19 vaccine among HCWs in Katsina State using an online structured questionnaire and predicted variables that could increase the acceptance of the vaccine among HCWs using logistic regression analysis. A total of 793 HCWs were included in this study. Of these, 65.4% (n=519) of them were male and 36.2% (n=287) were aged between 30-39 years. Eighty percent (80%, n=638) of the HCWs have been tested for the SARS-CoV-2 out of which 10.8% (n=65) of them tested positive. The majority of the HCWs (97.3%, n=765) believed that the COVID-19 vaccine was safe and 90% (n=714) of the HCWs have received the first dose of the COVID-19 vaccine. Our findings showed that the age of the HCW, their COVID-19 testing status, and the type of health facility they work (either public or private) were the main predictors for the acceptance of the COVID-19 vaccine among HCWs in Katsina state. HCWs between the age of 30-39 years were more likely (OR:7.06; 95% CI: 2.36, 21.07; p < 0.001) to accept the vaccine than others. In the same vein, HCWs that have been tested for COVID-19 were more likely (OR:7.64; 95% CI: 3.62, 16.16; p < 0.001) to accept the vaccine than those that have not been tested. In addition, HCWs in public health facilities were more likely (OR: 2.91; 95% CI: 1.17, 6.11; p = 0.094) to accept the COVID-19 vaccine than their counterparts in private health facilities. There was a high acceptance of the COVID-19 vaccines among HCWs in Katsina State. More emphasis should be paid on adherence to non-pharmaceutical interventions and the availability of vaccines for HCWs in private hospitals.

Background Human Immuno-Deficiency Virus (HIV) remains one of the world’s significant public health challenges. Viral suppression is the key indicator for treatment success in People living with HIV (PLHIV). We determined the level of viral suppression, and its associated factors among PLHIV attending Federal Medical Centre Katsina (FMC Katsina), Nigeria. Methods This retrospective descriptive cross-sectional study was conducted on 913 HIV positive adults enrolled in care between January 2009 and December 2019. Information on socio-demographics, clinical, immunological, Viral load (VL), and other relevant parameters were extracted from the patients’ care records. The primary outcome was the proportion of patients that achieved viral suppression. We also analyzed variables that were associated with VL suppression. Results Of 913, records of 831 (91.0%) registered patients were analyzed. During the period, 751 (90.4%) achieved viral suppression, 427 (51.4%) had CD4 counts  ≥ 500 and 477 (57.4%) were on HAART for ≥ 5 years. Majority, 793 (95.4%) were on first-line HAART regimen (Tenofovir-Lamivudine-Dolutegravir or Abacavir-Lamivudine-Dolutegravir), and 809 (97.4%) in the non-advanced stage (WHO stages 1 and 2). The median (interquartile range) of viral load was 20 (20–40) vs 19,989 (3311–110,340) cp/ml in virally suppressed, and unsuppressed  respectively. Factors associated with viral suppression included being unemployed (Adjusted OR [AOR] 4.9, 95% CI 2.771, 8.539), educated (AOR 4.2, 95% CI 1.098, 16.223), having a baseline CD4 count ≥ 500 cells/µl (AOR 2.7, 95% CI 1.588, 4.625), and being on first line HAART regimen [AOR 7.0, 95% CI 3.220, 15.648]. Conclusions Our study demonstrated a good viral suppression among PLHIV on HAART. Variables associated with viral suppression included unemployment, formal education, high baseline CD4 count, and first line HAART regimen.

Introduction human cytomegalovirus (CMV) has remained a cause of morbidity and mortality in pregnancy and immunocompromised patients. CMV is transmissible through blood transfusion. We conducted a descriptive, cross-sectional study to assess blood donor safety and to determine the prevalence and associated factors for CMV infection among blood donors in Minna, Nigeria. Methods all consenting blood donors were screened for CMV antibodies (IgM and IgG) using ELISA kit and haematological indices using a haematological analyzer. We administered structured questionnaires to obtain socio-demographic and socio-economic data. Data were subjected to univariate, bivariate and multivariate statistical analyses using Epi Info version 3.5.4. Significant associations were presumed if p < 0.05. Results a total of 345 participantswere recruited, the majority were males 336 (97.4%). Monthly earnings of majority of the blood donors, 136 (40.6%) ranged from ₦18,000 to ₦35,000. The prevalence of CMV infection was 96.2%. The prevalence of anti-CMV IgG antibodies was 96.2% and that of IgM was 2.6%. Most of the study participants, 274 (79.4%) were family replacement donors. The majority of the blood donors 195 (56.5%) were anaemic (PCV < 36, Hb < 12g/dl). Those with positive CMV were more likely to be of high-income level (OR = 0.32, P = 0.04). Conclusion the seroprevalence of CMV was high with a significant proportion of donors capable of transmitting CMV infection to blood recipients. The majority of the blood donors were anaemic. High income level is associated with CMV infection. Quality of screening for anemia be improved.