Missouriwatcher
Editor, Senior Moderator
Last year the national baseline for ILI: 2.5%; the previous year, 2.3%
This year the national baseline for ILI: 2.4%
The percentage of patient visits to healthcare providers for ILI reported each week is weighted on the basis of state population. This percentage is compared each week with the national baseline of 2.4%. The baseline is the mean percentage of patient visits for ILI during non-influenza weeks for the previous three seasons plus two standard deviations. Due to wide variability in regional level data, it is not appropriate to apply the national baseline to regional data; therefore, region specific baselines are calculated. Regional baselines for the 2011-12 influenza season are:
Regional baselines for the 2011-12 influenza season are:
Region 1 ? 1.1% LAST YEAR IT WAS HIGHER
Connecticut, Maine, Massachusetts, New Hampshire, Rhode Island, and Vermont
Region 2 ? 2.5% LAST YEAR IT WAS LOWER
New Jersey, New York, Puerto Rico, and the U.S. Virgin Islands
Region 3 ? 2.5%
Delaware, District of Columbia, Maryland, Pennsylvania, Virginia, and West Virginia
Region 4 ? 2.3% SAME AS LAST YEAR
Alabama, Florida, Georgia, Kentucky, Mississippi, North Carolina, South Carolina, and Tennessee
Region 5 ? 1.6% LAST YEAR IT WAS HIGHER
Illinois, Indiana, Michigan, Minnesota, Ohio, and Wisconsin
Region 6 ? 4.3% LAST YEAR IT WAS HIGHER
Arkansas, Louisiana, New Mexico, Oklahoma, and Texas
Region 7 ? 2.3% SAME AS LAST YEAR
Iowa, Kansas, Missouri, and Nebraska
Region 8 ? 2.1% LAST YEAR IT WAS LOWER
Colorado, Montana, North Dakota, South Dakota, Utah, and Wyoming
Region 9 ? 3.9% LAST YEAR IT WAS HIGHER
Arizona, California, Guam, Hawaii, and Nevada
Region 10? 2.2% LAST YEAR IT WAS HIGHER
Alaska, Idaho, Oregon, and Washington
http://www.cdc.gov/flu/weekly/overview.htm
This year the national baseline for ILI: 2.4%
The percentage of patient visits to healthcare providers for ILI reported each week is weighted on the basis of state population. This percentage is compared each week with the national baseline of 2.4%. The baseline is the mean percentage of patient visits for ILI during non-influenza weeks for the previous three seasons plus two standard deviations. Due to wide variability in regional level data, it is not appropriate to apply the national baseline to regional data; therefore, region specific baselines are calculated. Regional baselines for the 2011-12 influenza season are:
Regional baselines for the 2011-12 influenza season are:
Region 1 ? 1.1% LAST YEAR IT WAS HIGHER
Connecticut, Maine, Massachusetts, New Hampshire, Rhode Island, and Vermont
Region 2 ? 2.5% LAST YEAR IT WAS LOWER
New Jersey, New York, Puerto Rico, and the U.S. Virgin Islands
Region 3 ? 2.5%
Delaware, District of Columbia, Maryland, Pennsylvania, Virginia, and West Virginia
Region 4 ? 2.3% SAME AS LAST YEAR
Alabama, Florida, Georgia, Kentucky, Mississippi, North Carolina, South Carolina, and Tennessee
Region 5 ? 1.6% LAST YEAR IT WAS HIGHER
Illinois, Indiana, Michigan, Minnesota, Ohio, and Wisconsin
Region 6 ? 4.3% LAST YEAR IT WAS HIGHER
Arkansas, Louisiana, New Mexico, Oklahoma, and Texas
Region 7 ? 2.3% SAME AS LAST YEAR
Iowa, Kansas, Missouri, and Nebraska
Region 8 ? 2.1% LAST YEAR IT WAS LOWER
Colorado, Montana, North Dakota, South Dakota, Utah, and Wyoming
Region 9 ? 3.9% LAST YEAR IT WAS HIGHER
Arizona, California, Guam, Hawaii, and Nevada
Region 10? 2.2% LAST YEAR IT WAS HIGHER
Alaska, Idaho, Oregon, and Washington
http://www.cdc.gov/flu/weekly/overview.htm