Process severity data
sircovid_parameters_severity(params)Severity data, via Bob Verity's markovid
package. This needs to be NULL (use the default bundled data
version in the package), a data.frame object (for raw severity
data) or a list (for data that has already been processed by
sircovid for use). New severity data comes from Bob Verity
via the markovid package, and needs to be carefully calibrated
with the progression parameters.
A list of age-structured probabilities