One of the recent victims was a 59-year-old Dallas resident and the other was a 81-year-old resident of Irving.
Health and Human Services officials in Boone County said they saw 144 lab confirmed cases of the flu in the week of December 17-23.
Additional identifying information is not provided by the health department.
All three people had other health complications at the time of their deaths, but the ultimate cause was the flu, according to the health department.More news: Singer files police report claiming Corey Lewandowski slapped her on the buttocks
Flu symptoms include a 100 degree Fahrenheit or higher fever, feeling feverish, a cough and/or sore throat, fatigue, nausea, vomiting and/or diarrhea, which is most common in children.
"Flu vaccination is the most effective protection against flu, and it's still not too late to get a flu shot".
Locations offering influenza vaccinations can be found here.
-Covering sneezes and coughs with a tissue, and disposing of tissues immediately; if no tissue is available sneezing or coughing into your inner elbow.More news: How to Watch the Alamo Bowl: Stanford vs
Avoid touching your eyes, nose, or mouth, since hands may become contaminated with live influenza virus.
Wash your hands frequently with soap and water.
However, public health officials said people sick with the flu should seek help if they develop difficulty breathing or shortness of breath, experience chest pain or severe abdominal pain, suffer sudden dizziness or experience "severe vomiting or vomiting that won't stop". Stay at least 6 feet away from individuals who are visibly ill.
Stay home when you are sick. Going to work or school while ill may pass the disease onto someone who is at risk for serious complications.More news: Cris Cyborg teases a complete change in game-plan against Holly Holm