Snakebites are associated with poverty, weather fluctuations, and El Niño

Luis Fernando Chaves, Ting Wu Chuang, Mahmood Sasa, José María Gutiérrez

Research output: Contribution to journalArticle

20 Citations (Scopus)

Abstract

Snakebites are environmental and occupational health hazards that mainly affect rural populations worldwide. The ectothermic nature of snakes raises the issue of how climate change’s impact on snake ecology could influence the incidence of snakebites in humans in ways that echo the increased predation pressure of snakes on their prey. We thus ask whether snakebites reported in Costa Rica from 2005 to 2013 were associated with meteorological fluctuations. We emphasize El Niño Southern Oscillation (ENSO), a climatic phenomenon associated with cycles of other neglected tropical diseases (NTDs) in the region and elsewhere. We ask how spatial heterogeneity in snakebites and poverty are associated, given the importance of the latter for NTDs. We found that periodicity in snakebites reflects snake reproductive phenology and is associated with ENSO. Snakebites are more likely to occur at high temperatures and may be significantly reduced after the rainy season. Nevertheless, snakebites cluster in Costa Rican areas with the heaviest rainfall, increase with poverty indicators, and decrease with altitude. Altogether, our results suggest that snakebites might vary as a result of climate change.

Original languageEnglish
Article number1500249
JournalScience advances
Volume1
Issue number8
DOIs
Publication statusPublished - Jan 1 2015

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Snake Bites
Weather
Poverty
Snakes
Neglected Diseases
Climate Change
Costa Rica
Environmental Health
Periodicity
Rural Population
Occupational Health
Ecology
Pressure
Temperature
Incidence

ASJC Scopus subject areas

  • Medicine(all)

Cite this

Snakebites are associated with poverty, weather fluctuations, and El Niño. / Chaves, Luis Fernando; Chuang, Ting Wu; Sasa, Mahmood; Gutiérrez, José María.

In: Science advances, Vol. 1, No. 8, 1500249, 01.01.2015.

Research output: Contribution to journalArticle

Chaves, Luis Fernando ; Chuang, Ting Wu ; Sasa, Mahmood ; Gutiérrez, José María. / Snakebites are associated with poverty, weather fluctuations, and El Niño. In: Science advances. 2015 ; Vol. 1, No. 8.
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