Notes: This data is reported weekly to Centers for Disease Control Prevention by physicians enrolled as "sentinel providers", a group of community-based practices and university health clinics. There are 23 sentinel providers in the 2019-2020 season who report the number and age group of patients with "influenza-like-illness" (ILI) - those with a fever over 100°F, a cough and/or sore throat with no other known cause.
Notes: Data are preliminary and will be updated as more results become available.
Source: State Health Laboratory influenza results reported to the World Health Organization (WHO) and the National Respiratory and Enteric Virus Surveillance System (NREVSS) through a secure online website. The weeks are based on the Morbidity and Mortality Weekly Report (MMWR) by the Centers for Disease Control Prevention.