West Nile kills California horse

A 5-year-old mare became the first known racehorse in California to die from the West Nile virus, according to the California Horse Racing Board.

Tests concluded Aug. 13 at the University of California at Davis confirmed that the mare, Quick Nip, euthanized Aug. 10 at Golden Gate Fields, was infected with West Nile virus.#

The racing board is conducting an investigation into the vaccination history of Quick Nip, who was claimed for $12,500 from a May 30 victory at Hollywood Park by trainer Mark Glatt for himself and John Xitco.

Quick Nip went to northern California after a sixth-place finish at Hollywood Park on July 9, but had neither raced nor worked since her arrival. She earned $115,400 with 7 victories in 20 career starts.