FluView Clinical

This is the API documentation for accessing the FluView Clinical (fluview_clinical) endpoint of Delphi’s epidemiological data.

General topics not specific to any particular endpoint are discussed in the API overview. Such topics include: contributing, citing, and data licensing.

FluView Clinical Data

…

The API

The base URL is: https://delphi.cmu.edu/epidata/fluview_clinical/

See this documentation for details on specifying epiweeks, dates, and lists.

Parameters

Required

Parameter	Description	Type
`epiweeks`	epiweeks	`list` of epiweeks
`regions`	regions	`list` of region labels

Optional

Parameter	Description	Type
`issues`	issues	`list` of epiweeks
`lag`	# weeks between each epiweek and its issue	integer

Notes:

If both issues and lag are specified, only issues is used. If neither is specified, the current issues are used.

Response

Field	Description	Type
`result`	result code: 1 = success, 2 = too many results, -2 = no results	integer
`epidata`	list of results	array of objects
`epidata[].release_date`		string
`epidata[].region`		string
`epidata[].issue`		integer
`epidata[].epiweek`		integer
`epidata[].lag`		integer
`epidata[].total_specimens`		integer
`epidata[].total_a`		integer
`epidata[].total_b`		integer
`epidata[].percent_positive`		float
`epidata[].percent_a`		float
`epidata[].percent_b`		float
`message`	`success` or error message	string

Example URLs

FluView Clinical on 2020w01 (national)

https://delphi.cmu.edu/epidata/fluview_clinical/?regions=nat&epiweeks=202001

{
  "result": 1,
  "epidata": [
    {
      "release_date": "2020-04-10",
      "region": "nat",
      "issue": 202014,
      "epiweek": 202001,
      "lag": 13,
      "total_specimens": 64980,
      "total_a": 5651,
      "total_b": 9647,
      "percent_positive": 23.5426,
      "percent_a": 8.69652,
      "percent_b": 14.8461
    },
    ...
  ],
  "message": "success"
}

Code Samples

Libraries are available for JavaScript, Python, and R. The following samples show how to import the library and fetch national FluView Clinical data for epiweeks 201940 and 202001-202010 (11 weeks total).

JavaScript (in a web browser)

<!-- Imports -->
<script src="delphi_epidata.js"></script>
<!-- Fetch data -->
<script>
  EpidataAsync.fluview_clinical('nat', [201940, EpidataAsync.range(202001, 202010)]).then((res) => {
    console.log(res.result, res.message, res.epidata != null ? res.epidata.length : 0);
  });
</script>

Python

Optionally install the package using pip(env):

pip install delphi-epidata

Otherwise, place delphi_epidata.py from this repo next to your python script.

# Import
from delphi_epidata import Epidata
# Fetch data
res = Epidata.fluview_clinical(['nat'], [201940, Epidata.range(202001, 202010)])
print(res['result'], res['message'], len(res['epidata']))

R

# Import
source('delphi_epidata.R')
# Fetch data
res <- Epidata$fluview_clinical(list('nat'), list(201940, Epidata$range(202001, 202010)))
cat(paste(res$result, res$message, length(res$epidata), "\n"))