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U.S. Outpatient Influenza-like Illness Surveillance Network (ILINet): Overall Percentage of Visits for ILI

U.S. Outpatient Influenza-like Illness Surveillance Network (ILINet): Overall Percentage of Visits for ILI
Updated Apr. 17, 2020
This graph displays the percentage of visits for influenza-like-illness (ILI) by age group reported to CDC by the U.S. Outpatient Influenza-like Illness Surveillance Network (ILINet).

National (Baseline: 2.4%)
CDC Week # Sites Reporting ILI 0-4 years ILI 5-24 years ILI 25-49 years ILI 50-64 years ILI 65 years and older Total ILI Total Patient Visits % Unweighted ILI % Weighted ILI
201940 56,511 6.0 172,877 2.4 250,271 1.2 135,453 0.7 151,130 0.5
201941 58,900 6.2 171,817 2.4 248,234 1.3 137,075 0.8 155,136 0.6
201942 60,095 6.8 167,207 2.7 243,049 1.4 135,560 0.9 154,866 0.6
201943 61,228 7.1 176,476 2.9 250,335 1.5 139,567 0.9 158,388 0.6
201944 63,633 7.4 171,960 3.1 246,142 1.5 133,692 0.9 152,099 0.6
201945 66,353 8.4 174,266 3.7 243,709 1.7 133,263 1.0 152,172 0.6
201946 67,387 9.3 170,435 4.2 241,212 2.0 131,683 1.2 148,402 0.7
201947 73,442 9.7 177,411 5.0 253,835 2.2 139,061 1.3 154,298 0.8
201948 74,482 11.1 153,027 5.3 232,143 2.4 127,239 1.4 148,442 0.9
201949 73,402 10.6 175,342 4.9 255,947 2.8 137,089 1.6 156,155 1.0
201950 76,216 10.8 183,825 6.1 255,325 3.0 138,113 1.7 155,885 1.0
201951 81,520 12.4 183,593 8.3 252,285 3.7 135,369 1.9 155,745 1.2
201952 90,525 15.9 170,504 11.5 259,122 5.9 141,047 3.2 165,546 2.0
202001 86,829 14.7 162,965 8.3 279,963 5.9 149,120 3.5 169,822 2.4
202002 72,376 12.3 173,071 7.0 273,229 5.1 147,065 3.1 164,818 1.9
202003 73,404 12.7 183,417 8.1 266,032 4.8 143,273 2.9 159,818 1.7
202004 75,537 13.8 186,094 9.4 265,699 5.3 142,068 3.2 157,548 1.7
202005 78,816 14.6 208,539 10.5 277,528 6.3 144,784 3.9 160,096 2.0
202006 78,453 15.0 208,067 11.1 275,471 6.8 146,330 4.1 159,203 2.1
202007 75,501 13.5 196,708 9.7 273,952 6.1 148,062 3.8 162,546 2.0
202008 68,204 13.1 174,365 8.6 250,614 5.7 136,485 3.8 151,120 2.1
202009 67,915 11.8 179,907 7.4 261,277 5.4 142,026 3.6 157,868 2.0
202010 69,187 11.7 188,447 7.4 270,552 5.5 147,110 3.7 162,308 2.2
202011 66,162 12.5 184,799 8.5 273,844 6.8 143,218 4.9 149,445 2.7
202012 45,361 14.0 117,778 8.6 229,570 7.8 115,357 6.3 108,923 3.8
202013 29,107 10.4 83,138 5.7 193,714 6.4 98,986 5.9 94,259 3.8
202014 21,250 6.3 70,025 4.1 168,803 5.1 89,790 5.2 86,652 3.3
202015 19,073 4.3 65,983 2.9 155,268 3.7 87,085 3.9 87,572 2.6
Totals 1,830,869 4,632,043 6,947,125 3,744,970 4,140,262

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