The New York State Department of Health (NYSDOH) collects, compiles, and analyzes
information on influenza activity year round in New York State (NYS) and produces this weekly
report during the influenza season (October through the following May). 1
Weekly Influenza Surveillance Report
During the week ending January 20, 2018
• Influenza activity level was categorized as geographically widespread2
. This is the seventh week that widespread activity
has been reported.
• There were 7,779 laboratory-confirmed influenza reports, a 28% increase over last week.
• Of the 3,581 specimens submitted to WHO/NREVSS laboratories, 813 (22.70%) were positive for influenza.
• Of the 132 specimens tested at Wadsworth Center, 80 were positive for influenza. 12 were Influenza A (H1),
62 were influenza A (H3), 5 were influenza B (Yamagata), and 1 was influenza B (Victoria).
• Reports of percent of patient visits for influenza-like illness (ILI3
) from ILINet providers was 8.58%, which is above the
regional baseline of 3.10%.
• The number of patients hospitalized with laboratory-confirmed influenza was 1,759 a 5% increase over last week.
• There were no influenza-associated pediatric deaths reported this week. There has been one influenza-associated
pediatric death reported this season.
• Preliminary results for influenza vaccine effectiveness (VE) in the US have not been released for the current season, but
according to the CDC, data suggests that the influenza vaccine continues to offer protection against all influenza viruses,
and can reduce the severity of illness for those who do get the flu. Additional information about VE, including information
addressing news reports of reduced VE in Australia, can be found on the CDC website at https://www.cdc.gov/flu/