source,url,retrieved,note
"CDC RESP-NET Socrata kvib-3txy; FluSurv-NET GRASP PostPhase03DataTool","https://data.cdc.gov/resource/kvib-3txy.json","2026-03-13","Cumulative end-of-season hospitalization rate per 100,000. COVID 2019-20 = partial season March-June 2020 only. 2020-21 flu near-zero due to NPIs."

season,flu_per_100k,rsv_per_100k,covid_per_100k,combined_resp_net_per_100k,notes
2015-16,26.7,,,,"FluSurv-NET only; RSV-NET and COVID-NET not yet operational"
2016-17,59.3,,,,"FluSurv-NET only"
2017-18,105.3,,,,"FluSurv-NET only; highest flu season in dataset"
2018-19,64,25,,89,"RSV-NET launched this season"
2019-20,66,30,180,276,"COVID partial season (Mar-Jun 2020)"
2020-21,1,13,520,533,"Flu near-zero (NPIs); COVID peak season"
2021-22,18,29,519,565,"Second major COVID wave; RSV rebound"
2022-23,62,55,252,369,"Tri-demic: all three elevated simultaneously"
2023-24,83,58,200,342,
2024-25,126,54,102,283,