Domestic Cooking Fuel Combustion and Household Air Pollution in Chinese Adults

Over the past two decades, epidemiological research has been expanding to explore the relationships between individual exposure to air pollutants and the negative effects that it may have on human health. Complex pathways including host metabolites and gut microbiota are involved in the burden air pollution places on individuals, and these pathways are not yet well understood. We employed a set of simple analyses to investigate these relationships in a diverse sample of adults from the 2015 China Health and Nutrition Survey (CHNS). We used a series of analyses, which accounted for covariates such as gender and geography: first, we used descriptive statistics to investigate the relationship between cooking fuel usage and gut microbiota in 2,798 individuals; and then used random forest models to investigate the relationship between a 6-category household air pollution variable (household smoking exposure vs none and the use of different cooking fuels) and diet and metabolite data in 308 individuals. The original hypothesis proposed for this analysis was that household air pollution via the combustion of domestic cooking fuels could be used to explain some of the variation in the gut microbiota of adults in the CHNS dataset. Descriptive analyses indicated a diverse dataset, however with high geographical variation in the gut microbiome and too few individuals using each cooking fuel type per province, further analyses were underpowered. Similarly, four random forest models using host metabolites, diet, and other important covariates showed low predictive accuracy of household air pollution exposure in a 6-category variable both overall (45-55% in each model) and across classes of the 6-category measure (0-75%). Random forests also had lower predictive accuracy in classes of the 6-category variable with fewer individuals contained in them (lower sample size). While the original hypothesis and planned analyses could be useful in determining potential future areas for research, the CHNS data is overall underpowered for dissecting the relationships between household air pollution, host gut microbiota and plasma metabolites, and important covariates.Bachelor of Science in Public Healt

The impact of COVID-19 and national pandemic responses on health service utilisation in seven low- and middle-income countries

BACKGROUND: The COVID-19 pandemic has disrupted health services worldwide, which may have led to increased mortality and secondary disease outbreaks. Disruptions vary by patient population, geographic area, and service. While many reasons have been put forward to explain disruptions, few studies have empirically investigated their causes. OBJECTIVE: We quantify disruptions to outpatient services, facility-based deliveries, and family planning in seven low- and middle-income countries during the COVID-19 pandemic and quantify relationships between disruptions and the intensity of national pandemic responses. METHODS: We leveraged routine data from 104 Partners In Health-supported facilities from January 2016 to December 2021. We first quantified COVID-19-related disruptions in each country by month using negative binomial time series models. We then modelled the relationship between disruptions and the intensity of national pandemic responses, as measured by the stringency index from the Oxford COVID-19 Government Response Tracker. RESULTS: For all the studied countries, we observed at least one month with a significant decline in outpatient visits during the COVID-19 pandemic. We also observed significant cumulative drops in outpatient visits across all months in Lesotho, Liberia, Malawi, Rwanda, and Sierra Leone. A significant cumulative decrease in facility-based deliveries was observed in Haiti, Lesotho, Mexico, and Sierra Leone. No country had significant cumulative drops in family planning visits. For a 10-unit increase in the average monthly stringency index, the proportion deviation in monthly facility outpatient visits compared to expected fell by 3.9% (95% CI: -5.1%, -1.6%). No relationship between stringency of pandemic responses and utilisation was observed for facility-based deliveries or family planning. CONCLUSIONS: Context-specific strategies show the ability of health systems to sustain essential health services during the pandemic. The link between pandemic responses and healthcare utilisation can inform purposeful strategies to ensure communities have access to care and provide lessons for promoting the utilisation of health services elsewhere

Attitudes toward COVID-19 Vaccination: Staff and Patient Perspectives at Six Health Facilities in Sierra Leone

Sierra Leone is a West African country with a population of over 8 million. With more than half of Sierra Leone’s population living in rural areas, it is important to understand rural populations’ access to and attitudes toward the COVID-19 vaccine. In November 2021, the rate of vaccination coverage in Sierra Leone was only 7% for one dose and 4% for two doses. Understanding perspectives of health facility staff and patients can help strengthen future vaccine campaigns. We conducted a cross-sectional study, between March 2022 and May 2022, of clinical staff, non-clinical staff, and adult (>18 years) patients/caregivers attending six Ministry of Health and Sanitation (MoHS) facilities supported by Partners In Health, four in the Kono district and two in the Western Urban Area district, the capital of Sierra Leone. We assessed the opportunity to vaccinate, vaccine uptake, and intention to vaccinate. Out of the 2015 participants, 11.4% were clinical staff, 18.8% were non-clinical staff, and 69.8% were patients/caregivers. Less than half of the patients/caregivers had the opportunity to be vaccinated (42%), and 22% of patients/caregivers were fully vaccinated. Among the unvaccinated population, 44% would refuse a vaccine if offered to them at no cost. Lack of access to COVID-19 vaccines and to official education messaging, especially for patients and caregivers, is still an underlying problem in Sierra Leone for vaccine uptake, rather than a lack of willingness to be vaccinated

Impact of COVID-19 on access to cancer care in Rwanda: a retrospective time-series study using electronic medical records data

Introduction The COVID-19 pandemic has caused disruptions in access to routine healthcare services worldwide, with a particularly high impact on chronic care patients and low and middle-income countries. In this study, we used routinely collected electronic medical records data to assess the impact of the COVID-19 pandemic on access to cancer care at the Butaro Cancer Center of Excellence (BCCOE) in rural Rwanda.Methods We conducted a retrospective time-series study among all Rwandan patients who received cancer care at the BCCOE between 1 January 2016 and 31 July 2021. The primary outcomes of interest included a comparison of the number of patients who were predicted based on time-series models of pre-COVID-19 trends versus the actual number of patients who presented during the COVID-19 period (between March 2020 and July 2021) across four key indicators: the number of new patients, number of scheduled appointments, number of clinical visits attended and the proportion of scheduled appointments completed on time.Results In total, 8970 patients (7140 patients enrolled before COVID-19 and 1830 patients enrolled during COVID-19) were included in this study. During the COVID-19 period, enrolment of new patients dropped by 21.7% (95% prediction interval (PI): −31.3%, −11.7%) compared with the pre-COVID-19 period. Similarly, the number of clinical visits was 25.0% (95% PI: −31.1%, −19.1%) lower than expected and the proportion of scheduled visits completed on time was 27.9% (95% PI: −39.8%, −14.1%) lower than expected. However, the number of scheduled visits did not deviate significantly from expected.Conclusion Although scheduling procedures for visits continued as expected, our findings reveal that the COVID-19 pandemic interrupted patients’ ability to access cancer care and attend scheduled appointments at the BCCOE. This interruption in care suggests delayed diagnosis and loss to follow-up, potentially resulting in a higher rate of negative health outcomes among cancer patients in Rwanda