The most common cause of injury is bites from non-venomous arthropods, the group that includes spiders, mosquitoes, ticks and centipedes. As temperatures rise, the habitats of some of these creatures will get bigger, as they will be able to survive in more places, meaning they are able to injure more people.
The habitats of larger animals, such as bears, overlapping more and more with human development and recreational activities, as well, so injuries from these animals could also increase, the study says.
Over the five-year period, over 6 million emergency department admissions have been linked to animal-related injuries. That works out to 1,291,507 people annually, or 19 injuries per 10,000 visits.
"First and foremost, the most common injury associated with an animal is not actually a bear or alligator," said Forrester, a traumatologist and critical care at Stanford University.
Nearly half of the injuries, 41%, were related to bites from non-venomous arthropods. Dog bites were the next highest cause, accounting for 26% of the injuries. Third were bites and stings from hornets, wasps and bees, which made up 13% of the injuries.  The biggest percentage of ER visits for animal-related injuries – 42% – was in the South
The study found that the highest group of patients, 34%, was in the lowest 25% household income for their ZIP code. These were also the patients most likely to be injured by bites from venomous spiders, spiders and arthropods.
"This finding has implications for public health prevention programs targeting injury reduction from preventable causes," said Stallones, who was not involved in the research.
Only 3% of those who were seen in an emergency department were admitted to the hospital. One-third of hospital admissions came from non-venomous arthropod bites. Those who had isolated abdominal injuries were most likely to be admitted to the hospital or die.
Although there was a multitude of injuries in the study period, there were only 1,162 deaths, accounting for 0.02% of the emergency visits. Of those deaths, 278 came after a bite from a non-venomous arthropod, the largest number from a single cause.
Rat bites were the mechanism of injury with the highest frequency of deaths: 6.5 deaths per 10,000 bites. Bites from venomous snakes and lizards followed closely. Dog bites were responsible for the third highest rate of deaths.
Holstege pointed out that due to the codes used to identify animal injuries, "it's hard for them to go further into exactly why certain animals were related to mortality or related to admissions."
"I think what this article really does is give us a better "said Holstege, who said," It's a good idea, "said Holstege,
Dog bites and non-venomous arthropods were the two most costly types of injuries, costing $ 1.36 billion and $ 1.33 billion, respectively, over the five years analyzed. These categories, along with injuries from venomous snakes and lizards, which cost $ 898 million, accounted for approximately 60% of all costs.
Holstege suggests that the costs associated with the venomous snake and lizard injuries could be due to the required antidotes
"Very few of these cases were admitted to the hospital," he said. "The question is, how many have to go to an emergency department, and could the costs have been reduced by either calling the poison center if it's envenomation with something that's poisonous or talking to a primary care doctor?"
The authors note that the total cost of these injuries over the five-year period is $ 5.96 billion.
If you are attacked by an animal, Forrester, Stallones and Holstege all advise seeking immediate medical attention from an emergency department, a primary care physician or a poison control center.