Package index
Query the new Epidata API (v5)
The current API. See vignette("migration-guide") for how to update covidcast queries.
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epidata_meta() - Get cast-API source metadata
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epidata_snapshot()epidata_archive()epidata() - cast-API snapshot and archive queries
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epidata_aux() - Fetch V5 auxiliary data
Query the covidcast endpoint (v4)
The previous main endpoint, frozen since September 22, 2026. It still serves historical data but receives no new data; use the v5 functions above for current data.
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pub_covidcast()deprecated - Various COVID and flu signals via the COVIDcast endpoint
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pub_covidcast_meta()deprecated - Metadata for the COVIDcast endpoint
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covidcast_epidata() - Creates the COVIDcast Epidata autocomplete helper
Query legacy endpoints (v3)
Older endpoints, each with its own dataset. Most are static or no longer updated.
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pub_covid_hosp_facility()deprecated - COVID hospitalizations by facility
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pub_covid_hosp_facility_lookup()deprecated - Helper for finding COVID hospitalization facilities
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pub_covid_hosp_state_timeseries()deprecated - COVID hospitalizations by state
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pub_delphi()deprecated - Delphi's ILINet outpatient doctor visits forecasts
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pub_dengue_nowcast()deprecated - Delphi's PAHO dengue nowcasts (North and South America)
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pub_ecdc_ili()deprecated - ECDC ILI incidence (Europe)
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pub_flusurv()deprecated - CDC FluSurv flu hospitalizations
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pub_fluview()deprecated - CDC FluView ILINet outpatient doctor visits
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pub_fluview_clinical()deprecated - CDC FluView flu tests from clinical labs
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pub_fluview_meta()deprecated - Metadata for the FluView endpoint
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pub_gft()deprecated - Google Flu Trends flu search volume
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pub_kcdc_ili()deprecated - KCDC ILI incidence (Korea)
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pub_meta()deprecated - Metadata for the Delphi Epidata API
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pub_nidss_dengue()deprecated - NIDSS dengue cases (Taiwan)
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pub_nidss_flu()deprecated - NIDSS flu doctor visits (Taiwan)
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pub_nowcast()deprecated - Delphi's ILI Nearby nowcasts
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pub_paho_dengue()deprecated - PAHO dengue data (North and South America)
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pub_wiki()deprecated - Wikipedia webpage counts by article
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avail_endpoints() - List all available Epidata API endpoints
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create_epidata_call()fetch() - An abstraction that holds information needed to make an epidata request
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fetch_args_list() - Set custom API request parameters
Configuration and utilities
Set the API key (get_api_key(), save_api_key()), which lifts the anonymous rate limits but does not grant access to private endpoints. Also the date types that endpoints accept: epirange() and timeset.
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get_api_key()save_api_key() - Get and set API keys
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epirange() - Specify a range of days or weeks for API requests
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timeset - Timeset formats for specifying dates
Control caching behavior
Optionally store API responses on disk so repeated calls do not hit the API again. The cache is off by default, and it only stores calls for a fixed past version of the data (not “latest”), since those cannot change. See set_cache() for the environment variables that turn it on.
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set_cache() - Create or renew a cache for this session
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clear_cache() - Manually reset the cache, deleting all currently saved data and starting afresh
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disable_cache() - Turn off the caching for this session
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cache_info() - Describe current cache
Make requests to private API endpoints
These endpoints serve restricted data sources. Besides an API key, they need a separate auth token, passed as the auth argument. Access is granted per data source by Delphi, and the token is not the same as the API key. See each endpoint’s page for details.
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pvt_cdc()deprecated - CDC total and by topic webpage visits
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pvt_dengue_sensors()deprecated - PAHO dengue digital surveillance sensors (North and South America)
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pvt_ght()deprecated - Google Health Trends health topics search volume
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pvt_meta_norostat()deprecated - Metadata for the NoroSTAT endpoint
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pvt_norostat()deprecated - CDC NoroSTAT norovirus outbreaks
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pvt_quidel()deprecated - Quidel COVID-19 and influenza testing data
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pvt_sensors()deprecated - Influenza and dengue digital surveillance sensors
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pvt_twitter()deprecated - HealthTweets total and influenza-related tweets