Coyote attacks on humans are uncommon and rarely cause serious injuries, but have been increasing in frequency, especially in the state of California. In the 30 years leading up to March 2006, at least 160 attacks occurred in the United States, mostly in the Los Angeles County area. Data from the USDA's Wildlife Services, the California Department of Fish and Wildlife, and other sources show that while 41 attacks occurred during the period of 1988–1997, 48 attacks were verified from 1998 through 2003. The majority of these incidents occurred in Southern California near the suburban-wildland interface.