Food insecurity, a well-established determinant of chronic disease morbidity and mortality, is rapidly increasing due to the coronavirus disease 2019 (COVID-19) pandemic. We present a conceptual model to understand the multiple mechanisms through which the economic and public health crises sparked by COVID-19 might increase food insecurity and contribute to poor health outcomes in the short- and long-term. We hypothesize that, in the short-term, increased food insecurity, household economic disruption, household stress, and interruptions in healthcare will contribute to acute chronic disease complications. However, the impact of the pandemic on food security will linger after social-distancing policies are lifted and the health system stabilizes, resulting in increased risk for chronic disease development, morbidity, and mortality among food-insecure households in the long-term. Research is needed to examine the impact of the pandemic-related increase in food insecurity on short- and long-term chronic health outcomes, and to delineate the underlying causal mechanisms. Such research is critical to inform the development of effective programs and policies to address food insecurity and its downstream health impacts during COVID-19 and future pandemics.

Background

People with HIV (PWH) are disproportionately vulnerable to the impacts of wildfires, given the need for frequent access to healthcare systems, higher burden of comorbidities, higher food insecurity, mental and behavioral health challenges, and challenges of living with HIV in a rural area. In this study, we aim to better understand the pathways through which wildfires impact health outcomes among PWH.

Methods

From October 2021 through February 2022, we conducted individual semi-structured qualitative interviews with PWH impacted by the Northern California wildfires and clinicians of PWH who were impacted by wildfires. The study aims were to explore the influence of wildfires on the health of PWH and to discuss measures at the individual, clinic, and system levels that helped to mitigate these impacts.

Results

We interviewed 15 PWH and 7 clinicians. While some PWH felt that surviving the HIV epidemic added to their resilience against wildfires, many felt that the wildfires compounded the HIV-related traumas that they have experienced. Participants outlined five main routes by which wildfires negatively impacted their health: (1) access to healthcare (medications, clinics, clinic staff), (2) mental health (trauma; anxiety, depression, or stress; sleep disturbances; coping strategies), (3) physical health (cardiopulmonary, other co-morbidities), (4) social/economic impacts (housing, finances, community), and (5) nutrition and exercise. The recommendations for future wildfire preparedness were at the (1) individual-level (what to have during evacuation), (2) pharmacy-level (procedural, staffing), and (3) clinic- or county-level (funds and vouchers; case management; mental health services; emergency response planning; other services such as telehealth, home visits, home laboratory testing).

Conclusions

Based on our data and prior research, we devised a conceptual framework that acknowledges the impact of wildfires at the community-, household-, and individual-level with implications for physical and mental health outcomes among PWH. These findings and framework can help in developing future interventions, programs, and policies to mitigate the cumulative impacts of extreme weather events on the health of PWH, particularly among individuals living in rural areas. Further studies are needed to examine health system strengthening strategies, innovative methods to improve access to healthcare, and community resilience through disaster preparedness.

Trial registration

N/A.

Alcohol consumption and beliefs about mixing alcohol and ART are associated with decreased adherence to antiretroviral therapy (ART). In this study, we examined how romantic partners influence alcohol and ART use. We conducted semi-structured interviews with 24 HIV-positive individuals and their primary partners (48 individuals) in KwaZulu-Natal, South Africa. Almost 17% of participants spontaneously expressed beliefs that alcohol and ART should not be mixed. Participants who held these beliefs influenced their partners' behaviors by either discouraging the mixing of alcohol and ART, which sometimes resulted in missed pills when drinking, or by helping partners manage their medications when drinking. Other participants encouraged partners to take ART no matter what. Messages on alcohol and ART may need to be refined for ART patients who cannot abstain from alcohol. Primary partners should be included in these education efforts and their influence could be leveraged to help reduce alcohol consumption and maintain adherence.

Food insecurity, which affects 37 million individuals in the United States (U.S.) and disproportionately burdens women, minorities and older adults, is a well-established determinant of poor health. Previous studies suggest social capital, defined as the material and social benefits arising from relationships among individuals within and between groups, may be protective against food insecurity. Drawing on this evidence, calls have been made for interventions and policies to promote social capital to address food insecurity. However, limited research has explored in-depth how social capital shapes the lived experience of food insecurity in the U.S. We explored how older women from three settings in the U.S. used forms of social capital to navigate their food environments. Between November 2017-July 2018, we conducted 38 semi-structured interviews with food-insecure women aged 50 years or older enrolled in the Northern California, Georgia, and North Carolina sites of the Women's Interagency HIV study, an ongoing cohort study of women living with and at risk of HIV. Interviews were analyzed using an inductive-deductive approach. Women from the three sites explained how they drew upon different forms of capital to access food. Women in Georgia and North Carolina depended on support from members within their social group (bonding social capital) to address food insecurity but described limited opportunities to build relationships with members from other social groups (bridging social capital) or representatives of institutions (linking social capital). In contrast, women from Northern California frequently used bridging and linking social capital to access food but described limited bonding social capital. Findings show how the role of social capital in protecting against food insecurity is diverse, complex, and structurally determined. Intervention implications are discussed.

Despite the important role of social relationships for health and wellbeing, little is known about how primary partners affect adherence to HIV care and treatment. We qualitatively explored how relationship dynamics and partner support influence adherence among couples from KwaZulu-Natal, South Africa. Twenty-four heterosexual couples with at least one HIV-positive partner completed semi-structured interviews on topics including relationship dynamics (intimacy or emotional closeness, communication, violence), experiences with HIV care and treatment and HIV-related social support. The majority of couples were seroconcordant HIV-positive (92%) and both on antiretroviral therapy (ART) (63%). Participants described how primary partners both interfered with and supported adherence. Negative forms of influence included relationship conflict, which resulted in forgetfulness to take pills, and men's attempt to control use of ART. However, participants were more likely to highlight positive forms of influence on adherence, which included social support (instrumental, informational and emotional), intimacy and commitment. The findings also suggest a reciprocal relationship between ART and relationships such that couple ART use may enhance relationship quality. Primary partners are important pillars of support for ART adherence, especially in contexts of high unemployment and poverty. Future interventions that encourage and leverage these supportive relationships could improve ART adherence among heterosexual couples in similar settings.

Assimilable organic carbon (AOC) is commonly used to measure the growth potential of microorganisms in water, but has not yet been investigated for measuring microbial growth potential in soils. In this study, a simple, rapid, and non-growth based assay to determine AOC in soil was developed using a naturally occurring luminous strain Vibrio harveyi BB721 to determine the fraction of low molecular weight organic carbon in soil water extract. Calibration of the assay was achieved by measuring the luminescence intensity of starved V. harveyi BB721 cells in the late exponential phase with a concentration range from 0 to 800 µg l(-1) glucose (equivalent to 0-16.0 mg glucose C kg(-1) soil) with the detection limit of 10 µg l(-1) equivalent to 0.20 mg glucose C kg(-1) soil. Results showed that bioluminescence was proportional to the concentration of glucose added to soil. The luminescence intensity of the cells was highly pH dependent and the optimal pH was about 7.0. The average AOC concentration in 32 soils tested was 2.9±2.2 mg glucose C kg(-1). Our data showed that AOC levels in soil water extracts were significantly correlated (P<0.05) with microbial biomass determined as microbial biomass carbon, indicating that the AOC concentrations determined by the method developed might be a good indicator of soil microbial biomass. Our findings provide a new approach that may be used to determine AOC in environmental samples using a non-growth bioluminescence based assay. Understanding the levels of AOC in soil water extract provides new insights into our ability to estimate the most available carbon pool to bacteria in soil that may be easily assimilated into cells for many metabolic processes and suggest possible the links between AOC, microbial regrowth potential, and microbial biomass in soils.

Background

Aging populations in the United States exhibit high rates of food insecurity and chronic illness. Few studies have explored the neighborhood-level drivers of food insecurity among such populations, and how they intersect with experiences of aging.

Objective

The aim of this study was to explore how aging women experience food insecurity in the United States, and the neighborhood-level factors that influence these experiences.

Design

Semistructured qualitative interviews were conducted to elicit participants' perceptions of how their neighborhood influenced their experiences with food security and aging.

Participants/setting

Thirty-eight food-insecure women aged 50 years and older were purposively sampled from the Northern California, Georgia, and North Carolina sites of the Women's Interagency Human Immunodeficiency Virus Study. Interviews were conducted between November 2017 and July 2018 at the three Women's Interagency Human Immunodeficiency Virus Study sites.

Statistical analysis

Three researchers thematically analyzed the data using an inductive-deductive approach.

Results

Participants described neighborhood-level drivers of food insecurity that centered around three themes: accessibility of food from traditional food stores, the role of food aid institutions, and the intersection of aging with the food environment. Participants explained that food insecurity was related to limited access to food stores largely due to long distances and poor public transportation in Georgia and North Carolina, and high food prices in Northern California. Most participants described being dependent on food aid programs, but found this difficult due to poor quality food and long wait times. Aging-related issues emerged as a cross-cutting theme, with fatigue, poor strength, and chronic illness amplifying barriers to accessing food.

Conclusions

Findings from this study reveal the structural barriers that aging women face in accessing healthy food within their neighborhoods, and how experiences with aging and chronic illnesses exacerbate these barriers. Although future programs should address common neighborhood-level barriers such as the accessibility and affordability of healthy foods, they should also be tailored to aging women and the local context.