High ambient levels of grass, weed and other pollen are associated with asthma admissions in children and adolescents: A large 5‐year case‐crossover study

Shrestha, Som Kumar; Katelaris, Constance H.; Dharmage, Shyamali C.; Burton, Pamela; Vicendese, Don; Tham, Rachel; Abramson, Michael J.; Erbas, Bircan

doi:10.1111/cea.13225

Cited by 38 publications

(42 citation statements)

References 25 publications

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“…Thus, the correlation between regional pollen counts and Google searches for pollen allergy related terms might be a useful approach to determine pollen level induced allergy symptoms. 17 These data parallel with the results of a large 5-year case-crossover study in Australia 2 where grass pollen counts of 4.8 pollen/m 3 were significantly associated with asthma exacerbations. A significant increase in asthma hospitalizations was observed for an interquartile range increase in grass pollen concentrations (5.9%, 95% CI:0.0, 12.0) in the Brussels region.…”

Section: Discussionsupporting

confidence: 68%

“…Grass pollen is one of the most important triggers for exacerbations of allergic diseases such as rhinitis and asthma. 2 A precise definition of the grass pollen season onset is crucial for the confirmation of a pollen allergy diagnosis and personalized treatment of patients with allergic rhinitis and asthma. The high costs of the instruments and procedures required for pollen counting limit the capacity to constitute a comprehensive pollen network covering all planes.…”

Section: Introductionmentioning

confidence: 99%

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Assessment of Google Trends terms reporting allergies and the grass pollen season in Ukraine

Kaidashev

Morokhovets

Rodinkova

et al. 2020

World Allergy Organization Journal

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Background: Grass pollen allergy is an important trigger for the development of respiratory disorders. Defining the grass pollen season onset is critical for correct allergy diagnosis and personalized therapy. The development of a pan-European sentinel network for allergic diseases has raised the problem of translating the Google search terms into different European languages as well as defining specific pollen season characteristics in different regions. Grass pollen allergy was investigated due to high allergenicity and wide expansion of grass pollen in Europe. Objectives: The aim of this study was to examine which translations of "hay fever", "grass", and "rhinitis" could be used in the native Cyrillic languages, especially in Ukrainian and Russian, and to compare the seasonality of allergic respiratory queries in Ukraine with the grass pollen counts. Methods: Google Trends (GT) was used to search Google queries concerning grass pollen allergy: "allergy", "hay fever", "runny nose", "grass", "asthma", and "pollen". The Cyrillic terms in Ukrainian and Russian were used. The search was done for the period from 2013 to 2017. Pollen collection from 2013 to 2016 was conducted using volumetric methods. Average daily temperatures were obtained from http://gismeteo.ua. Correlations were assessed by Spearman (R) test. Results: The Ukrainian Google users searched the Cyrillic equivalents for "runny nose", "grass", and "asthma". Due to the GT queries profile, Ukraine had a "D" pattern according to the classification, developed by Bousquet J et al (2017). In Ukraine, the Poaceae pollen season generally occurred between the second ten-day period of May and the last ten-day period of July. The Poaceae pollen season started with a concentration of pollen grains of 8.0 m À3. This concentration provoked the growth of GT "grass", "allergy", "hay fever", and "asthma" queries. Conclusions: The terms "grass", "allergy", "hay fever", and "asthma" (in their Cyrillic equivalents) are required in Ukraine to account for the grass pollen exposure by GT. The study of GT may be a useful tool to make an assessment of the grass pollen season for the prevention and minimization of exposure to significant grass pollen concentrations.

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Section: Discussionsupporting

confidence: 68%

Section: Introductionmentioning

confidence: 99%

Assessment of Google Trends terms reporting allergies and the grass pollen season in Ukraine

Kaidashev

Morokhovets

Rodinkova

et al. 2020

World Allergy Organization Journal

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“…The interaction between different WASH variables, sex and area of residence on childhood undernutrition outcomes were also examined. For interaction analysis, we considered a p-value of < 0.1 as the level of significance to not miss important associations [41]. This study used Stata SE 14.1 (StrataCorp, College Station, Texas) for the analysis.…”

Section: Discussionmentioning

confidence: 99%

Water, sanitation and hygiene practices associated with improved height-for-age, weight-for-height and weight-for-age z-scores among under-five children in Nepal

2020

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Background: Evidence of the influence of water, sanitation and hygiene (WASH) behaviors on childhood nutritional status is inconsistent. Few studies have examined their interactive effects. This study aimed to examine associations and interactions between WASH variables and preschool child undernutrition. Methods: Data from a nationally representative sample of 2352 children assessed during the 2016 Nepal Demographic and Health Survey were analyzed by multi-variable linear regression to understand the association between height-forage (HAZ), weight-for-height (WHZ) and weight-forage (WAZ) z-scores and WASH variables. Interactions between WASH variables, sex and area of residence on childhood nutritional status were also examined. Results: The mean z-score [standard deviation] for children's WAZ, HAZ and WHZ scores were − 1.33 [1.1], − 1.52 [1.3] and − 0.65 [1.1], respectively. A unit increase in cluster sanitation coverage was associated with an increase of 0.30 (95%CI: 0.12 to 0.48) for WAZ and 0.28 (95%CI: 0.001 to 0.56) for HAZ scores. Household water purification practice was associated with an increase of 0.24 (95%CI: 0.07 to 0.41) in WHZ score. Handwashing practice with water and soap was associated with an increase of 0.15 (95%CI: 0.04 to 0.25) in WAZ and 0.13 (95%CI: 0.01 to 0.24) in WHZ scores. The effect of water purification practice was higher for rural areas compared to urban settings for HAZ scores (p-value for interaction = 0.02). Conclusions: Consistent with findings from other countries in the South Asian region, findings of this study highlight the potential importance of good WASH practices, and therefore the potential of WASH interventions, to contribute to improved nutritional status in rural Nepal.

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“…Not unexpectedly, those children who tested positive for RV also had increased wheeze and diagnosis of acute asthma. 80 By contrast, IFV positivity in children was negatively associated with wheeze, whereas fever was more prominent. Nonetheless, those with a history of asthma experienced "asthma-augmented influenza" characterized by more severe systemic symptoms.…”

Section: Triggers For Asthma Attacksmentioning

confidence: 95%

Developments in the mechanisms of allergy in 2018 through the eyes of Clinical and Experimental Allergy, Part I

Roberts

Almqvist

Boyle

et al. 2019

Clin Experimental Allergy

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High ambient levels of grass, weed and other pollen are associated with asthma admissions in children and adolescents: A large 5‐year case‐crossover study

Cited by 38 publications

References 25 publications

Assessment of Google Trends terms reporting allergies and the grass pollen season in Ukraine

Assessment of Google Trends terms reporting allergies and the grass pollen season in Ukraine

Water, sanitation and hygiene practices associated with improved height-for-age, weight-for-height and weight-for-age z-scores among under-five children in Nepal

Developments in the mechanisms of allergy in 2018 through the eyes of Clinical and Experimental Allergy, Part I

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