CHARLOTTE, NC -- Charlotte is a national flu hot spot, with one of the most severe levels of influenza in the U.S., according to a new report analyzing national doctor office data.

The Charlotte-metro area and the Minneapolis-St. Paul metro area in Minnesota are tied for being the worst metro areas in the nation this week when it comes to influenza, said Doctors Report. The findings are based on the website's and mobile app's Illness Tracker that compiles doctor diagnosis data reported during a seven-day period. Influenza, more commonly referred to as "flu," is a respiratory illness caused by viruses infecting the nose, throat and lungs and can be severe and, especially for the young and very weak, be life threatening, according to Doctors Report. Flu-related illnesses that can result include pneumonia, asthma and dehydration.

Last week, state health officials said widespread flu in North Carolina was behind 20 new flu-related deaths, bringing the state's overall death toll to 95 since flu season began in October. As flu season kicks into high gear in the Tar Heel state, however, some pharmacies in the state are running low on vaccines, according to a report.

Here are the top 10 metro areas in the U.S., with a severity scale, with 10 being the most severe:

1. Minneapolis-St. Paul-Bloomington, MN-WI, 9.5

2. Charlotte-Concord-Gastonia, NC-SC, 9.5

3. New York-Newark-Jersey City, NY-NJ-PA, 9.0

4. Atlanta-Sandy Springs-Roswell, GA, 9.0

5. Cincinnati, OH-KY-IN, 8.0

6. Tampa-St. Petersburg-Clearwater, FL, 7.5

7. Philadelphia-Camden-Wilmington, PA-NJ-DE-MD, 7.0

8. Washington-Arlington-Alexandria, DC-VA-MD-WV, 7.0

9. Dallas-Fort Worth-Arlington, TX, 6.5

10. Portland-Vancouver-Hillsboro, OR-WA, 6.0

11. Baltimore-Columbia-Towson, MD, 5.5

12. Chicago-Naperville-Elgin, IL-IN-WI, 5.0

13. Pittsburgh, PA, 5.0

14. Detroit-Warren-Dearborn, MI, 4.5



When it came to Flu A, a different category of influenza, Charlotte fared better, dropping to No. 5. SEE ALSO: Flu Now Blamed For 95 Deaths In NC

Here is Doctors Report's current severity rankings for Flu A:

1. Miami-Fort Lauderdale-West Palm Beach, FL, 8.5

2. Atlanta-Sandy Springs-Roswell, GA, 7.0

3. Baltimore-Columbia-Towson, MD, 7.0

4. Minneapolis-St. Paul-Bloomington, MN-WI, 6.0

5. Charlotte-Concord-Gastonia, NC-SC, 6.0

6. New York-Newark-Jersey City, NY-NJ-PA, 5.5

7. Chicago-Naperville-Elgin, IL-IN-WI, 4.5

8. Tampa-St. Petersburg-Clearwater, FL, 4.5

9. Dallas-Fort Worth-Arlington, TX, 4.0

10. Washington-Arlington-Alexandria, DC-VA-MD-WV, 4.0

11. San Francisco-Oakland-Hayward, CA, 4.0

12. Pittsburgh, PA, 4.0



SEE ALSO: Flu Vaccine Supplies Running Low In NC: How To Find One

The particularly bad season is attributed to infections from a flu strain known as H3N2. It doesn't respond well to vaccinations and is particularly dangerous to young children and older adults over the age of 65.

Here are tips to avoid the flu and curb its spread, provided by the Centers for Disease Control: Stay home if you are sick. With the exception of seeking medical care, do not go out until 24 hours after your fever has subsided without the use of medication.

Avoid touching your mouth, nose and eyes.

Avoid touching your mouth, nose and eyes. Wash your hands frequently with soap and water or an alcohol-based hand rub.

Clean and disinfect surfaces that may have become contaminated with germs.

Avoid others who are sick.

Cough or sneeze into a tissue. Throw away tissues after use. To treat the flu, use over-the-counter medications like ibuprofen or cough syrup to relieve symptoms. Rest in bed and drink lots of fluids. If you contact your doctor within 48 hours of onset of symptoms, you may be able to take an antiviral drug, which will reduce the severity of symptoms and length of the illness.