Weld County is reporting the first death of the Colorado flu season.
A young adult recently died of the H1N1 strain - the same type as the 2009 flu pandemic, the county's health department reported.
Dozens of people across the state have been hospitalized because of the flu. Four people have been hospitalized in El Paso County, said Susan Wheelan, an El Paso County Public Health spokeswoman.
The previous flu season proved particularly difficult for Colorado, causing 1,530 people to be checked into a hospital. Not since the 2009-2010 flu season - which featured the H1N1 flu pandemic - did health officials tally more flu hospitalizations across the state during the last decade.
Last year in El Paso County, 161 people were hospitalized, according to county statistics.
A new version of the flu shot debuted this year with the ability to protect against four different flu strains, rather than the traditional three. Flu season in Colorado typically peaks in January or February.
"The flu is always unpredictable and it's not too late to get a flu vaccine," Wheelan said.