TULSA, Oklahoma - Flu season is picking up with federal health officials reporting sharp increases in flu activity nationwide. Flu-Related Deaths Now Total 11 in Oklahoma 

The CDC is urging anyone over 6 months old who hasn't been vaccinated to get the shot right away.

"It can prevent you from getting sick, and even if you do get sick with influenza it can prevent you from having to go into the hospital," said Dr. Daniel Jernigan with the Centers for Disease Control.

Flu season usually starts in November or early December and peaks in February, but activity can last as late as May.

So far for the 2018-19 flu season, Oklahoma has seen 247 hospitalizations and 11 deaths from flu-related causes. The majority of the hospitalizations (63) have been in Tulsa County.