Retrieves the age group distribution of influenza positive tests that are reported by public health laboratories by influenza virus type and subtype/lineage. Laboratory data from multiple seasons and different age groups is provided.

age_group_distribution(years = NULL)



a vector of years to retrieve data for (i.e. 2014 for 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.



agd <- age_group_distribution(years=2015)