SAN DIEGO -- A multi-agency effort to crack down on drunken drivers in San Diego County netted 887 arrests this winter holiday season compared to 496 arrests during the same period a year earlier, according to a preliminary report released this morning.

The so-called 2009 Winter Holiday DUI Mobilization preliminary report includes traffic statistics previously released by the California Highway Patrol, along with information from 13 other law enforcement agencies in the county.

The reported arrests were made between 12:01 a.m. Dec. 18 and 12:01 a.m. Sunday, according to the San Diego County Sheriff's Department.

There were also five alcohol-related traffic deaths in the county during the reporting period, compared to eight in the prior winter holiday season, authorities said.

Three of this winter holiday season's five deaths occurred between New Year's Eve night and New Year's Day

The victims included Angela Hernandez Perez, a woman who stepped out into traffic Thursday evening on Third Avenue in Chula Vista; Elaina Lynn Luquis Ortiz, a pregnant woman sitting in a car rear-ended by an alleged drunken driver Friday morning on the 805 freeway in San Diego; and Ortiz's unborn infant.