get_flu_data: Retrieves state, regional or national influenza statistics from the CDC
Description
Uses the data source from the
CDC FluView
and provides flu reporting data as either a single data frame or a list of
data frames (depending on whether either WHO NREVSS or ILINet
(or both) is chosen.
depends on the region_type.
For "national", the sub_region should be NA.
For "hhs", should be a vector between 1:10.
For "census", should be a vector between 1:9
data_source
either of "who" (for WHO NREVSS) or "ilinet"
or "all" (for both)
years
a vector of years to retrieve data for (i.e. 2014 for CDC
flu season 2014-2015). Default value is the current year and all
years values should be > 1997
Value
If only a single data_source is specified, then a single
data.frame is returned, otherwise a named list with each
data.frame is returned.
Details
A lookup table between HHS regions and their member states/territories
is provided in hhs_regions.