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Exploring hotspots of pneumococcal pneumonia and potential impacts of ejecta dust exposure following the Christchurch earthquakes

Pearson, Amber; Kingham, Simon; Mitchell, Peter; Apparicio, Philippe (2013). Exploring hotspots of pneumococcal pneumonia and potential impacts of ejecta dust exposure following the Christchurch earthquakes Spatial and Spatio-temporal Epidemiology , vol. 7 . p. 1-9. DOI: 10.1016/j.sste.2013.08.001.

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Résumé

The etiology of pneumococcal pneumonia (PP) is well-known. Yet, some events may increase its incidence. Natural disasters may worsen air quality, a risk factor for PP. We investigated spatial/spatio-temporal clustering of PP pre- and post-earthquakes in Christchurch, New Zealand. The earthquakes resulted in deaths, widespread damage and liquefaction ejecta (a source of air-borne dust). We tested for clusters and associations with ejecta, using 97 cases (diagnosed 10/2008–12/2011), adjusted for age and area-level deprivation. The strongest evidence to support the potential role of ejecta in clusters of PP cases was the: (1) geographic shift in the spatio-temporal cluster after deprivation adjustment to match the post-earthquake clusters and; (2) increased relative risk in the fully-adjusted post-earthquake compared to the pre-earthquake cluster. The application of spatial statistics to study PP and ejecta are novel. Further studies to assess the long-term impacts of ejecta inhalation are recommended particularly in Christchurch, where seismic activity continues.

Type de document:
Mots-clés libres: Pneumococcal pneumonia; Natural disaster; Liquefaction; Particulate matter; Deprivation
Centre: Centre Urbanisation Culture Société
Date de dépôt: 09 oct. 2013 22:17
Dernière modification: 11 janv. 2017 18:51
URI: http://espace.inrs.ca/id/eprint/1603

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