(CNN) -- It was early on a Monday, just the seventh week of
school, when Danelle Olivares decided she would have to keep her
5-year-old daughter home from kindergarten. Trinity had a nasty
stomach bug, but no fever, and Olivares figured that a day of
rest at home would make things OK. But the morning brought no
relief. Trinity was cramping, having bouts of diarrhea and
vomiting. She was so pale that by late afternoon, Danelle and
her husband, Michael, brought their little girl to the emergency
room. She asked for water. Her legs hurt. Three hours later, she
was dead. Stunned as they were, the Olivareses got another shock
when doctors came back with test results: Trinity had fallen
victim to the H1N1 flu. "It really blew me away," Danelle
Olivares of Rio Rancho, New Mexico, told a local television
station. "She never even ran a fever." The World Health
Organization and U.S. Centers for Disease Control and Prevention
each list fever as a defining feature of H1N1. But that's being
called into question, most rece