KENOSHA, Wis. — A 26-year-old health care worker has died from complications of the flu, according to a Kenosha County official.

WISN-TV ( ) first reported the death of Katherine McQuestion, of Kenosha, who was a radiology technician at St. Catherine's Medical Center in Pleasant Prairie and who had received a flu shot.

Kenosha County Health Officer Cynthia Johnson confirmed Saturday that McQuestion's death certificate indicated she had the flu, which led to sepsis and a heart attack. A funeral home obituary lists McQuestion's death as Jan. 2. The funeral was Tuesday.

Johnson said it's typically the very young or elderly more likely to succumb to the flu, but this year's vaccine was poorly matched to the dominant strains in circulation. She recommended people still get a flu shot because it can be helpful for other strains.

In 2014, Kenosha County had 139 flu cases, mostly in December. There were 57 cases in 2013 and 34 in 2012, Johnson said.

On Jan. 1, a 12-year-old Milwaukee girl died from complications of the flu, according to the state Department of Health Services.

According to DHS, Wisconsin's flu season generally occurs between late October and May, with peak activity around late January or early February.