"u.s. outpatient influenza-like illness surveillance network (ilinet): percentage of visits for ili by age group reported by a subset of ilinet providers september 29, 2019 - april 4, 2020 data as of april 9, 2020"
"u.s. outpatient influenza-like illness surveillance network (ilinet): percentage of visits for ili by age group reported by a subset of ilinet providers september 29, 2019 - april 4, 2020 data as of april 9, 2020"