The U.S. has experienced unusually low flu activity for the 2020-21 season, with a national baseline of 2.6 percent outpatient visits for flu-like illness, though activity varies by region.
Information on outpatient visits to healthcare providers for flu-like illness is collected through the U.S. Outpatient Influenza-like Illness Surveillance Network.
Regional baselines for the 2020-21 flu season, ranked from greatest to least:
Arkansas, Louisiana, New Mexico, Oklahoma and Texas: 3.9 percent
New Jersey, New York, Puerto Rico and the U.S. Virgin Islands: 3.3 percent
Alabama, Florida, Georgia, Kentucky, Mississippi, North Carolina, South Carolina and Tennessee: 3.1 percent
Colorado, Montana, North Dakota, South Dakota, Utah and Wyoming: 2.8 percent
Arizona, California, Hawaii and Nevada: 2.4 percent
Connecticut, Maine, Massachusetts, New Hampshire, Rhode Island and Vermont: 2 percent
Delaware, District of Columbia, Maryland, Pennsylvania, Virginia and West Virginia: 2 percent
Illinois, Indiana, Michigan, Minnesota, Ohio and Wisconsin: 1.9 percent
Iowa, Kansas, Missouri and Nebraska: 1.7 percent
Alaska, Idaho, Oregon and Washington: 1.6 percent