Description from CDC Flu Portal Dashboard Information on patient visits to health care providers for influenza-like illness is collected through the U.S. Outpatient Influenza-like Illness Surveillance Network, ILINet. ILINet consists of approximately 3,200 outpatient healthcare providers in all 50 states, Puerto Rico, the District of Columbia and the U.S. Virgin Islands reporting over 36 million patient visits each year. Each week, approximately 2,000 outpatient healthcare providers around the country report data to CDC on the total number of patients seen and the number of those patients with influenza-like illness, ILI, by age group, 0-4 years, 5-24 years, 25-49 years, 50-64 years, and ≥ 65 years. For this system, ILI is defined as fever, temperature of 100°F, 37.8°C, or greater, and a cough and/or a sore throat in the absence of a known cause other than influenza. Sites with electronic records use an equivalent definition as determined by state public health authorities.

ilinet

Format

A data frame with 19556 rows and 7 variables:

state

Proper name U.S. State, character string

year

observation year, integer

week

observation week, integer

ili_perc

Unweighted percent of total Visits for ILI

ili_tot

Raw count for ILI visits

providers

No. of reporting providers

patients

No. of total patient visits

Source

https://gis.cdc.gov/grasp/fluview/fluportaldashboard.html

Details

Some variables renamed from original file for parsimony.