Influenza Surveillance ReportApril 21– April 27, 2013: Week 17
During week 17 of the 2012–13 influenza year 4.3% of outpatient visits to Hawaii sentinel providers were attributable to Influenza-Like Illness (ILI). Hawaii’s ILI outpatient visits were higher than the national baseline (2.2%) (i.e., outside the 95% confidence interval) and the national ILI (1.0%) (i.e., outside the 95% confidence interval). ILI is defined as fever (temperature of 100°F [37.8°C] or greater) and a cough and/or a sore throat without a KNOWN cause other than influenza.
The chart below displays the total volume of specimens tested for influenza by MMWR week during the 2012-13 influenza season, as well as the sub-set receiving confirmatory testing. Proportion of specimens positive for influenza viruses by type and sub-type is only presented for specimens tested by confirmatory tests (i.e., RT-PCR or viral culture).