Category:Drugs by type

In Infobox drug, type can be used to add specifics:
 * type=combo
 * type=mab
 * type=vaccine
 * type=

These categories list the first three options. Together they count for some 10% of the 6000 articles. The fourth option (drug type = single chemical drug) is not categorized. The single-chemical drugs articles make about 90% of the 6000 articles (as of January 2016).