(ragweed) pollen - A growing aeroallergen of concern in South Africa.

Background: Ragweed is an invasive, highly allergenic weed predicted to expand its habitat with warming global temperatures. Several species have been identified in South Africa for well over a century; however, its presence remained undetected by allergists and aerobiologists until the development of an extensive aerospora monitoring system across South African urban areas since 2019. This paper presents the inventory of preliminary investigation of the airborne pollen and the taxonomic identification of ragweed species.

Short-term, lagged association of airway inflammation, lung function, and asthma symptom score with PM exposure among schoolchildren within a high air pollution region in South Africa.

Background: Asthma affects millions of people globally, and high levels of air pollution aggravate asthma occurrence. This study aimed to determine the association between short-term lagged PM exposure and airway inflammation, lung function, and asthma symptom scores among schoolchildren in communities in the Highveld high-pollution region in South Africa.

Methods: A cross-sectional study was conducted among schoolchildren aged 9-14 years in six communities in the Highveld region in South Africa, between October 2018 and February 2019.

High aerospora levels and associated atmospheric circulation patterns: Pretoria, South Africa.

At high exposure levels, airborne pollen grains and fungal spores (termed aerospora hereafter), can trigger severe allergic respiratory diseases. For South Africa's administrative capital Pretoria, which boasts dense vegetation within a large urban forest, it is valuable from a health perspective to understand daily atmospheric circulation patterns associated with high aerospora levels. Therefore, we utilised a daily aerospora grain count dataset collected in Pretoria from 08/2019-02/2023 to investigate atmospheric circulation patterns (derived from ERA5 reanalysis sea level pressure [SLP] and 500 hPa geopotential height [zg500] fields) associated with high-risk aerospora levels (aerospora grain count > 90th percentile).

Outpatient Management of Fever and Neutropenia in Low-risk Children with Solid Tumors: A Quality Improvement Initiative.

Background: Management of febrile neutropenia in pediatric oncology usually requires inpatient parenteral antibiotics after initial evaluation, but some patients at lower risk of sepsis could be safely managed outpatient. We describe a quality improvement project to increase outpatient management of fever and neutropenia.

Methods: We designed a standardized algorithm for children with a solid tumor diagnosis and low risk for bacteremia.

Temporal variations in the short-term effects of ambient air pollution on cardiovascular and respiratory mortality: a pooled analysis of 380 urban areas over a 22-year period.

Background: Ambient air pollution, including particulate matter (such as PM and PM) and nitrogen dioxide (NO), has been linked to increases in mortality. Whether populations' vulnerability to these pollutants has changed over time is unclear, and studies on this topic do not include multicountry analysis. We evaluated whether changes in exposure to air pollutants were associated with changes in mortality effect estimates over time.

Linkers in Bitopic Agonists Shape Bias Profile among Transducers for the Dopamine D2 and D3 Receptors.

Bitopic ligands bind both orthosteric and allosteric or secondary binding sites within the same receptor, often resulting in an improvement of receptor selectivity, potency, and efficacy. In particular, for both agonists and antagonists of the dopamine D2 and D3 receptors (D2R and D3R), the primary therapeutic targets for several neurological and neuropsychiatric disorders, bitopic ligand design has proved advantageous in achieving better pharmacological profiles . Although the two pharmacophores within a bitopic ligand are typically considered the main drivers of conformational change for a receptor, the role of the linker that connects the two has not yet been systematically studied for its relevance in receptor activity profiles.

Elemental Characterization of Ambient Particulate Matter for a Globally Distributed Monitoring Network: Methodology and Implications.

Global ground-level measurements of elements in ambient particulate matter (PM) can provide valuable information to understand the distribution of dust and trace elements, assess health impacts, and investigate emission sources. We use X-ray fluorescence spectroscopy to characterize the elemental composition of PM samples collected from 27 globally distributed sites in the Surface PARTiculate mAtter Network (SPARTAN) over 2019-2023. Consistent protocols are applied to collect all samples and analyze them at one central laboratory, which facilitates comparison across different sites.

Ozone-related acute excess mortality projected to increase in the absence of climate and air quality controls consistent with the Paris Agreement.

Short-term exposure to ground-level ozone in cities is associated with increased mortality and is expected to worsen with climate and emission changes. However, no study has yet comprehensively assessed future ozone-related acute mortality across diverse geographic areas, various climate scenarios, and using CMIP6 multi-model ensembles, limiting our knowledge on future changes in global ozone-related acute mortality and our ability to design targeted health policies. Here, we combine CMIP6 simulations and epidemiological data from 406 cities in 20 countries or regions.

Mā te Whakarongo-a qualitative study exploring the impact of middle ear disease on New Zealand Māori.

Aim: The study aimed to explore the impact of middle ear disease on the lives of New Zealand Māori. Ear disease is common, yet there is a paucity of research into the effect it has on people's lives, particularly indigenous populations.

Method: The study used Kaupapa Māori-based qualitative methodology and involved a series of seven semi-structured interviews with Māori adults living with middle ear disease.

The South African Pollen Monitoring Network: Insights from 2 years of national aerospora sampling (2019-2021).

Background: Pollen monitoring has been discontinuously undertaken in South Africa, a country with high biodiversity, a seasonal rainfall gradient, and nine biomes from arid to subtropical. The South African Pollen Monitoring Network was set up in 2019 to conduct the first long-term national aerospora monitoring across multiple biomes, providing weekly reports to allergy sufferers and healthcare providers.

Methods: Daily airborne pollen concentrations were measured from August 2019 to August 2021 in seven cities across South Africa.

Joint effect of heat and air pollution on mortality in 620 cities of 36 countries.

Background: The epidemiological evidence on the interaction between heat and ambient air pollution on mortality is still inconsistent.

Objectives: To investigate the interaction between heat and ambient air pollution on daily mortality in a large dataset of 620 cities from 36 countries.

Methods: We used daily data on all-cause mortality, air temperature, particulate matter ≤ 10 μm (PM), PM ≤ 2.

Heat-related cardiorespiratory mortality: Effect modification by air pollution across 482 cities from 24 countries.

Background: Evidence on the potential interactive effects of heat and ambient air pollution on cause-specific mortality is inconclusive and limited to selected locations.

Objectives: We investigated the effects of heat on cardiovascular and respiratory mortality and its modification by air pollution during summer months (six consecutive hottest months) in 482 locations across 24 countries.

Methods: Location-specific daily death counts and exposure data (e.

The Risk of Orofacial Cleft Lip/Palate Due to Maternal Ambient Air Pollution Exposure: A Call for Further Research in South Africa.

Background: Despite being underreported, orofacial cleft lip/palate (CLP) remains in the top five of South Africa's most common congenital disorders. Maternal air pollution exposure has been associated with CLP in neonates. South Africa has high air pollution levels due to domestic burning practices, coal-fired power plants, mining, industry, and traffic pollution, among other sources.

Lagged acute respiratory outcomes among children related to ambient pollutant exposure in a high exposure setting in South Africa.

Unlabelled: Acute ambient air pollution impacts on the respiratory health of children may be lagged across time. We determined the short-term lagged effects of particulate matter (PM), sulphur dioxide (SO), and oxides of nitrogen (NO) on the respiratory health of children living in low-income communities.

Methods: A school-based study was conducted using a repeated measures design, across summer and winter, in four schools in each of four suburbs in the Vaal Triangle, South Africa.

An Equity Response to COVID-19 in Allegheny County, Pennsylvania: The Development and Work of the Black Equity Coalition.

From the onset of the pandemic in the United States, racial disparities in COVID-19 outcomes have been evident. In April 2020, several events prompted a concerned group of colleagues to form the Black Equity Coalition (BEC), a Black-led coalition in Allegheny County, Pennsylvania, which brings together professionals from multiple sectors who aim to ensure an equitable response to the COVID-19 pandemic. Several significant milestones have been achieved, and this article describes the development, functioning, and outcomes of the Coalition in the first 15 months of operation (April 2020-June 2021).

Time to Revisit Heart Failure Self-Care: A Concept Analysis.

Self-care is a central concept in heart failure management and nursing practice. Yet, the uptake of heart failure self-care has been uncritical and detached from broader contexts. Therefore, heart failure self-care was explored using Rodger's evolutionary concept analysis approach to identify antecedents, attributes, and consequences with attention to context, time, application, and meaning.

Coarse Particulate Air Pollution and Daily Mortality: A Global Study in 205 Cities.

The associations between ambient coarse particulate matter (PM) and daily mortality are not fully understood on a global scale. To evaluate the short-term associations between PM and total, cardiovascular, and respiratory mortality across multiple countries/regions worldwide. We collected daily mortality (total, cardiovascular, and respiratory) and air pollution data from 205 cities in 20 countries/regions.

Climate change and health within the South African context: A thematic content analysis study of climate change and health expert interviews.

Background:  Climate change presents an unprecedented and urgent threat to human health and survival. South Africa's health response will require a strong and effective intersectoral organisational effort.

Aim:  Exploratory interview outcomes are used to advance practice and policy recommendations, as well as for broad input in the development of a draft national framework for a health risk and vulnerability assessment (RVA) for national departments.

Women's perceptions of PERSPECTIVE: a breast cancer risk stratification e-platform.

Background: Breast cancer risk stratification categorizes a woman's potential risk of developing the disease as near-population, intermediate, or high. In accordance, screening and follow up for breast cancer can readily be tailored following risk assessment. Recent efforts have focussed on developing more accessible means to convey this information to women.

Differential Mortality Risks Associated With PM2.5 Components: A Multi-Country, Multi-City Study.

Background: The association between fine particulate matter (PM2.5) and mortality widely differs between as well as within countries. Differences in PM2.

Intravenous Cetirizine vs Intravenous Diphenhydramine for the Prevention of Hypersensitivity Infusion Reactions: Results of an Exploratory Phase 2 Study.

Pretreatment with antihistamines for the prevention of hypersensitivity infusion reactions is recommended for certain biologics and chemotherapies. Cetirizine is the first injectable second-generation antihistamine recently approved for acute urticaria. A randomized, exploratory phase 2 study evaluated intravenous (IV) cetirizine 10 mg versus IV diphenhydramine 50 mg as pretreatment in patients receiving an anti-CD20 agent or paclitaxel.

Mortality risk attributable to wildfire-related PM pollution: a global time series study in 749 locations.

Background: Many regions of the world are now facing more frequent and unprecedentedly large wildfires. However, the association between wildfire-related PM and mortality has not been well characterised. We aimed to comprehensively assess the association between short-term exposure to wildfire-related PM and mortality across various regions of the world.