Grant County health officials reported Friday that flu season officially has arrived.

The county's health district has received 13 reports of positive influenza lab tests, and believe that may indicate a wider spread flu outbreak.

"While 13 positive tests may not seem like many, health care providers are not required to report all positive flu tests," said Shawta Sackett, community public health manager and epidemiologist. "Not every patient who is seen in a clinic for flu will be tested and we know many people do not visit their health care provider when they are sick with the flu."

No severe cases have yet been reported in Grant County, but officials are recommending taking precautions against the spread of the respiratory illness.

Flu symptoms include a fever of 100 degrees or more with a cough or sore throat, headaches, runny or stuffy nose, aches, fatigue and sometimes vomiting or diarrhea.