The AusPollen partnership project: Allergenic airborne grass pollen seasonality and magnitude across temperate and subtropical eastern Australia, 2016–2020

Davies, Janet M.; Smith, Beth Addison; Milić, Anđelija; Campbell, Bradley C.; Haeften, Shanice Van; Burton, Pamela; Keaney, Ben; Lampugnani, Edwin R.; Vicendese, Don; Medek, Danielle E.; Huete, Alfredo; Erbas, Bircan; Newbigin, Edward; Katelaris, Constance H.; Haberle, Simon; Beggs, Paul J.

doi:10.1016/j.envres.2022.113762

Cited by 11 publications

(8 citation statements)

References 43 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…data. 16 In this study, we are building on our previous work with a more detailed analysis of the association between pollen season and child asthma hospital readmissions. We aim to follow this up with more recent data that would also include recent thunderstorm asthma events and for which we have currently applied for ethical approval.…”

Section: Discussionmentioning

confidence: 99%

“…Also, climate change impacts are likely to be complex and location dependent. In contrast to the Northern Hemisphere, impacts are not yet clear in Australia due to inconsistent monitoring resulting in insufficient data 16 . In this study, we are building on our previous work with a more detailed analysis of the association between pollen season and child asthma hospital readmissions.…”

Section: Discussionmentioning

confidence: 99%

“…Furthermore, the likely complex impact of climate change on the start and duration of pollen seasons across Australia is unknown, but subject to ongoing study. 15,16 However, it is well established that peak pollen season generally occurs between October to December in Victoria. 12,15,16 Therefore, we used peak pollen season for the present study to define pollen season as October to December.…”

Section: Methodsmentioning

confidence: 99%

“…15,16 However, it is well established that peak pollen season generally occurs between October to December in Victoria. 12,15,16 Therefore, we used peak pollen season for the present study to define pollen season as October to December. We built the statistical…”

Section: Methodsmentioning

confidence: 99%

“…It is difficult to precisely define when the pollen season starts or finishes. Furthermore, the likely complex impact of climate change on the start and duration of pollen seasons across Australia is unknown, but subject to ongoing study 15,16 . However, it is well established that peak pollen season generally occurs between October to December in Victoria 12,15,16 .…”

Section: Methodsmentioning

confidence: 99%

See 4 more Smart Citations

Grass pollen exposure is associated with higher readmission rates for pediatric asthma

Batra

Dharmage

Newbigin

et al. 2022

Pediatric Allergy Immunology

Self Cite

View full text Add to dashboard Cite

Background: Pediatric asthma hospital readmission is a burden on the individual and costly for Australian hospitals. Grass pollen's role, a known trigger for asthma admissions, is unexamined in readmissions. We examined the association between grass pollen and pediatric asthma readmission. Methods:The Victorian Admitted Episodes Dataset was used to identify all primary admissions with a principal diagnosis of asthma in children aged 2-18 years between 1997 and 2009. Readmissions were defined as subsequent admissions within 28 days of index admission discharge. Generalized additive models were used to assess associations between readmission, grass pollen season, and daily grass pollen counts, lagged and cumulative. Models were further stratified by sex and age group.Results: Mean daily readmission was higher during grass pollen season than other times of the year, incidence rate ratio (IRR) 1.44 (95% CI, 1.03, 2.02) and for children aged 2-5 years, IRR 1. 99 (1.26, 3.14). Same day grass pollen was nonlinearly associated with daily readmission for the 13-18 age group between 110 and 256 grains/m 3 , p < .01. Lag 2 grass pollen was nonlinearly associated with daily readmissions overall (p = .03), boys (p = .01), and younger age groups 2-5 (p = .02) and 6-12 (p < .001).Conclusions: Grass pollen exposure was associated with higher readmission rates for pediatric asthma. Treatment plans prior to discharge could be implemented to reduce the likelihood of readmission by younger children during the pollen season.

show abstract

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

See 3 more Smart Citations

Grass pollen exposure is associated with higher readmission rates for pediatric asthma

Batra

Dharmage

Newbigin

et al. 2022

Pediatric Allergy Immunology

Self Cite

View full text Add to dashboard Cite

show abstract

Investigation of spatial and temporal variations of airborne Poaceae, Myrtaceae and Cupressaceae pollen and Alternaria spores in Sydney, Australia, 2017–2020

Jetschni

Kouba²,

Beggs³

et al. 2023

Aerobiologia

View full text Add to dashboard Cite

There is a need for information on pollen exposure to assess allergy risk. Monitoring of aeroallergens in a city is usually limited to the use of a single trap for the whole area. While a single trap provides enough information on background pollen concentration for the area, varying pollen exposure across different urban environments, however, is not considered. In this study, we analysed aerobiological data of three pollen seasons (2017–2020) recorded with a volumetric pollen trap in Sydney, Australia. In order to assess spatial differences in pollen exposure across the city, we installed ten gravimetric traps recording pollen deposition for eight weeks during the summer of 2019/2020. We considered the influence of meteorological variables, land use, urbanisation and distance to the sea. Our results showed differences in pollen season characteristics across the three analysed seasons and correlations with meteorological parameters. Considering all years, we found for Poaceae and Alternaria the strongest positive correlation with mean temperature and for Myrtaceae and Cupressaceae with maximum temperature. Likewise, there were negative correlations with humidity (Myrtaceae, Cupressaceae, Alternaria) and precipitation (Myrtaceae, Cupressaceae). Days with medically relevant pollen and spore concentrations varied between years and we recorded the highest amount in 2017/2018 for Poaceae and Alternaria and in 2019/2020 for Myrtaceae. In addition, we found spatial and temporal variations of pollen deposition. However, we did not detect significant correlations between pollen deposition and land use, which can be attributable to drought conditions prior to the sampling campaign and the temporal setting in the pollen season. This study highlights the importance of continuous volumetric aerobiological monitoring as well as the assessment of pollen exposure at several locations across a large urban area.

show abstract

Trends in airborne grass pollen in Évora City (Portugal)

Caeiro,

Camacho,

Ferreira

et al. 2024

Aerobiologia

View full text Add to dashboard Cite

Aerobiology could be used as complementary data or proxy for studying phenology, especially in species which usually are not long-distance transported, such as grasses. This 21-year aerobiological study took place in Évora (South Portugal), using a seven-day recording volumetric pollen trap with the aim of analysing the temporal trends of grass pollen seasons. To this end, data were statistically tested for correlation and regression to determine the features and temporal trends of pollen seasons. Main results show that Poaceae pollen has a high representation in pollen spectrum, 20% (min: 7%; max: 44%), with a long season starting in March and lasting till August/September or October. There was an overall, but not statistically significant trend, towards an increase in the annual pollen integral and peak values, and also an overall non-statistically significant trend towards an earlier start and later end of the pollen season. Main and high pollen seasons have been lasting longer, and the days with allergenic potential have been rising in line with the local temperature rising trend. It seems that grass pollen production is being aided by warmer temperatures and increased grassland areas in Alentejo region. This could promote the increase in annual pollen levels and in the number of high pollen days over the years. In clinical terms, it means that grass allergic patients are exposed to longer periods of airborne pollen and to higher counts over a longer time. The climate conditions projected for Alentejo region, including rising temperature, and the changes in local grassland areas may help to clarify the trends of grass pollen seasons in the next decades.

show abstract

The AusPollen partnership project: Allergenic airborne grass pollen seasonality and magnitude across temperate and subtropical eastern Australia, 2016–2020

Cited by 11 publications

References 43 publications

Grass pollen exposure is associated with higher readmission rates for pediatric asthma

Grass pollen exposure is associated with higher readmission rates for pediatric asthma

Investigation of spatial and temporal variations of airborne Poaceae, Myrtaceae and Cupressaceae pollen and Alternaria spores in Sydney, Australia, 2017–2020

Trends in airborne grass pollen in Évora City (Portugal)

Contact Info

Product

Resources

About