https://www.beckershospitalreview.com/public-health/xbb-1-16-prevalence-by-region.html
| HHS surveillance region | Prevalence of XBB.1.16 |
| Region 1
Connecticut, Maine, Massachusetts, New Hampshire, Rhode Island and Vermont |
2.4 percent of all COVID-19 cases |
| Region 2
New Jersey, New York, Puerto Rico and the Virgin Islands |
9.3 |
| Region 3
Delaware, District of Columbia, Maryland, Pennsylvania, Virginia and West Virginia |
8.1 |
| Region 4
Alabama, Florida, Georgia, Kentucky, Mississippi, North Carolina, South Carolina and Tennessee |
4.3 |
| Region 5
Illinois, Indiana, Michigan, Minnesota, Ohio and Wisconsin |
6 |
| Region 6
Arkansas, Louisiana, New Mexico, Oklahoma and Texas |
21.3 |
| Region 7
Iowa, Kansas, Missouri and Nebraska |
9 |
| Region 8
Colorado, Montana, North Dakota, South Dakota, Utah and Wyoming |
6.2 |
| Region 9
Arizona, California, Hawaii, Nevada, American Samoa, Commonwealth of the Northern Mariana Islands, Federated States of Micronesia, Guam, Marshall Islands and Republic of Palau |
9.8 |
| Region 10
Alaska, Idaho, Oregon and Washington |
12.3 |