According to the Oklahoma State Department of Health's weekly flu activity summary, the number of flu deaths have increased by 6, including the state's first child death, making the total 20 in Oklahoma since September 1.
That age group has also made up an unexpectedly large portion of the county's flu deaths, he said.
Passe surveillance reporting takes as much as 3 weeks, that methodology response measures - equivalent to deploying vaccines or anti-virals and advising sufferers to pause at home - can in most cases disappear.
De-identified data from the users retrospectively identified weeks with elevated resting heart rate and changes to routine sleep, said the research published in The Lancet Digital Health journal. Most have been in the older population aged 50 years-plus.
They used an individual's resting heart rate and sleep duration and noted if there were abnormalities that were outside a user's typical range.
After dividing users by the state they resided in, the researchers calculated the proportion of users above the threshold and it was compared to weekly estimates of flu-like illness rates as reported by the Centers for Disease Control and Prevention of the United States.
Recently, health officials across the state have been encouraging families to get vaccinated as soon as possible.
Fitbit devices may be able to predict flu outbreaks.
Across each state, data from Fitbit trackers helped improve influenza predictions.
The flu season remains in full force across Minnesota.
'In the future as these devices improve, and with access to 24/7 real-time data, it may be possible to identify rates of influenza on a daily instead of weekly basis'.
In the study, the Fitbit users were predominantly middle age adults and likely higher income than the general population so potentially less likely to suffer comorbidities which could make them more susceptible to severe infections.
"When someone gets an infection, typically associated with a fever, their resting heart rate rises; that's their physiological response", says study author and epidemiologist Jennifer Radin.
"Clinical researchers are using wearable devices to open new paths to how we understand, prevent and treat disease and identify better approaches to keep people healthy and achieve more meaningful health outcomes", said Fitbit.in a press release to CNN.
Firstly, the general lack of activity data meant they could not account for how heart rates and amount of sleep may change because of other factors.
Prisma Health physicians encourage everyone to get their flu vaccinations.