The risk of being bitten by a dog is higher on hot, sunny, and smoggy days

Author:

Dey Tanujit1,Zanobetti Antonella2,Linnman Clas3

Affiliation:

1. Brigham and Women's Hospital

2. Harvard School of Public Health

3. Spaulding Rehabilitation Hospital

Abstract

Abstract Humans commit more violent crimes when temperature and air pollution is higher. Here, we investigate if also the day-to-day rates of dogs biting humans is influenced by environmental factors. 69,525 reports of dogs biting humans, sourced from public records on animal control requests and from ER records, were analyzed. The impact of temperature and air pollutants were evaluated with a zero-inflated Poisson generalized additive model, while controlling for regional and calendar effects. Exposure-response curves were used to assess the association between outcome and major exposure variables. We find that the rates of dogs biting humans increases with increasing temperature and ozone, but not PM2.5 exposure. We also observed that higher UV irradiation levels were related to higher rats of dog bites. We conclude that dogs, or the interactions between humans and dogs, are more hostile on hot, sunny, and smoggy days, indicating that the societal burden of extreme heat and air pollution also includes the costs of animal aggression.

Publisher

Research Square Platform LLC

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