Erratic electricity supply (Dumsor) and anxiety disorders among university students in Ghana: a cross sectional study

Power Outages and Community Health: a Narrative Review

PURPOSE OF REVIEW

Power outages, a common and underappreciated consequence of natural disasters, are increasing in number and severity due to climate change and aging electricity grids. This narrative review synthesizes the literature on power outages and health in communities.

RECENT FINDINGS

We searched Google Scholar and PubMed for English language studies with titles or abstracts containing "power outage" or "blackout." We limited papers to those that explicitly mentioned power outages or blackouts as the exposure of interest for health outcomes among individuals living in the community. We also used the reference list of these studies to identify additional studies. The final sample included 50 articles published between 2004 and 2020, with 17 (34%) appearing between 2016 and 2020. Exposure assessment remains basic and inconsistent, with 43 (86%) of studies evaluating single, large-scale power outages. Few studies used spatial and temporal control groups to assess changes in health outcomes attributable to power outages. Recent research linked data from electricity providers on power outages in space and time and included factors such as number of customers affected and duration to estimate exposure. The existing literature suggests that power outages have important health consequences ranging from carbon monoxide poisoning, temperature-related illness, gastrointestinal illness, and mortality to all-cause, cardiovascular, respiratory, and renal disease hospitalizations, especially for individuals relying on electricity-dependent medical equipment. Nonetheless the studies are limited, and more work is needed to better define and capture the relevant exposures and outcomes. Studies should consider modifying factors such as socioeconomic and other vulnerabilities as well as how community resiliency can minimize the adverse impacts of widespread major power outages.

Microbial Safety of Milk Production and Fermented Dairy Products in Africa

In Africa, milk production, processing and consumption are integral part of traditional food supply, with dairy products being a staple component of recommended healthy diets. This review provides an overview of the microbial safety characteristics of milk production and fermented dairy products in Africa. The object is to highlight the main microbial food safety hazards in the dairy chain and to propose appropriate preventive and control measures. Pathogens of public health concern including Mycobacterium bovis, Brucella abortus and Coxiella burnettii, which have largely been eradicated in many developed nations, still persist in the dairy chain in Africa. Factors such as the natural antimicrobial systems in milk and traditional processing technologies, including fermentation, heating and use of antimicrobial additives, that can potentially contribute to microbial safety of milk and dairy products in Africa will be discussed. Practical approaches to controlling safety hazards in the dairy chain in Africa have been proposed. Governmental regulatory bodies need to set the necessary national and regional safety standards, perform inspections and put measures in place to ensure that the standards are met, including strong enforcement programs within smallholder dairy chains. Dairy chain actors would require upgraded knowledge and training in preventive approaches such as good agricultural practices (GAP), hazard analysis and critical control points (HACCP) design and implementation and good hygienic practices (GHPs). Food safety education programs should be incorporated into school curricula, beginning at the basic school levels, to improve food safety cognition among students and promote life-long safe food handling behaviour.

Conceptualising the effect of access to electricity on health in low- and middle-income countries: A systematic review

Access to electricity is an important issue in low- and middle-income countries (LMICs) however its health implications are poorly understood. This paper systematically reviews the health effects of access to electricity and develops a conceptual model to summarise the pathways through which these effects may occur. The databases CINAHL, Embase, and MEDLINE were searched for studies examining the effects of access to electricity on health in LMICs. Thirty-three studies met the inclusion criteria: 23 focusing on electrification and 10 focusing on electricity reliability. Using a modified socio-ecological model, 4 main levels of influence were identified: (1) individual, (2) household, (3) community, and (4) institutional. Electrification was generally associated with positive health outcomes, such as reduced mortality, lower rates of disease, and improved quality of and access to care, while poor electricity reliability was associated with negative health outcomes, including increased morbidity and mortality, lower quality of care, and reduced utilisation of health services. Although the overall quality of the evidence was weak, given the many potential pathways through which electricity may affect health, efforts should be made not only to increase the number of connected households globally, but to improve the reliability of the electricity supply as well.