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Introduction An accurate understanding of the current status of dog-bite injuries in Korea is essential for establishing preventive strategies. There have been no national reports about dog-bite injuries in Korea. This study investigated dog-bite injuries in Korea that were registered in the nationwide injury surveillance database and analysed the risk factors for significant dog-bite injury. Methods A multicentre cross-sectional study was conducted using the emergency department (ED)-based Injury In-depth Surveillance (EDIIS) registry in Korea between 2011 and 2016. We defined significant injury as death, admission, surgery, or fracture or amputation. A multivariable logistic regression model was used to obtain the adjusted odds ratios (aORs) for the factors associated with significant dog-bite injuries. Results Among 1,537,617 injured patients, 9,966 (6.5 per 1,000 injured patients) presented to the ED for dog-bite injuries (5.6 in 2011 to 7.6 in 2016, P for trend < 0.001), and 489 (4.9%) were significant injuries. In the age-specific analysis, there were increasing trends only among teenagers (12−18 years) and adults (> 18 years). Being elderly (≥ 60 years) (aOR: 2.70, 95% CI: 2.15−3.39), having injuries to multiple anatomic sites (aOR: 4.37, 95% CI: 2.96−6.45), being bitten outdoors (aOR: 2.71, 95% CI: 2.20−3.34), and being bitten by a relative’s dog (aOR: 2.37, 95% CI: 1.09−5.17) were strongly associated with significant dog-bite injury. Conclusion Dog-bite injuries are increasing in Korea, especially in teenagers and adults. A relative’s or neighbour’s dog may be more dangerous than a stranger’s dog. Preventive strategies are needed to prevent dog-bite injuries in adults and children.

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