Set to potentially double last year's record, Oklahoma has lost 238 residents to flu-related illness so far this season. Flu season typically ends the third week in May.

Set to potentially double last year's record, Oklahoma has lost 238 residents to flu-related illness so far this season. Flu season typically ends the third week in May.

The record number of deaths in the state this season increased by 10 during the past week.

The Oklahoma State Department of Health reported Thursday that 238 people have died due to the flu since Sept. 1, up from 228 a week ago.

The agency said a record number of more than 4,400 residents have been hospitalized with the illness so far this season.

Regionally, the two most highly-populated areas — Tulsa County and Oklahoma County — report 1,126 cases and 44 deaths; and 743 cases and 36 deaths, respectively.

Sitting at third, Central Oklahoma — a region made up of six counties — has seen 599 cases (minus Oklahoma County), while flu hospitalizations appear to be slowing in Pottawatomie County; 97 hospitalizations have been recorded so far this season — up two from last week — and the number held at 88 for two weeks before that.

Northwest and southeast areas of Oklahoma show the lowest number of cases this season. The 18 counties that make up the northwest region in the state report 135 flu-related hospitalizations and 17 deaths. The Southeast region, made up of 13 counties, shows 271 hospitalizations and 13 deaths this season.

The number of deaths and hospitalizations surpass any flu season in Oklahoma since the department began tracking the illness in 2009. Now, with several weeks left to go, this season is just short of doubling the record — the previous record last year numbered 130 deaths.

The department reports the greatest number of flu-related deaths this year — 167 — is among people aged 65 or older. Reported deaths between the ages of 50 and 64 total 46, so far. Those 18 to 49 have seen 23 deaths in their category and one death each has been reported for children between five and 17, and infants to 4 years old.

Overall, influenza A(H3) viruses have predominated this season. However, in recent weeks the proportion of influenza A viruses has declined, and this week the numbers of influenza A and influenza B viruses reported were similar.

Watch for updates.