Adapted from cdcfluview::ilinet.
This unexported helper function retrieves current and historical ILINet surveillance data for the identified region via the CDC FluView API. The function is used internally in get_cdc_ili. Data returned include weighted and unweighted ILI percentage, as well as age-specific ILI outpatient visit counts for each location / epidemiological week.
Usage
ilinet(region = c("national", "hhs", "census", "state"), years = NULL)Arguments
- region
One of "
national", "hhs", "census", or "state"- years
A vector of years to retrieve data for (i.e.
2014for CDC flu season 2014-2015). CDC has data for this API going back to 1997. Default value (NULL) means retrieve all years. NOTE: if you happen to specify a 2-digit season value (i.e.57== 2017-2018) the function is smart enough to retrieve by season ID vs convert that to a year.