A package of legitimate AstraZeneca coronavirus vaccine is shown in the German state of Brandenburg. (Hannibal Hanschke/AP)

First came the fake medical-grade masks and coronavirus tests. Now, a new threat has emerged, global police organization Interpol warns: fake doses of the coronavirus vaccine.

Interpol said Wednesday that police in China and South Africa have seized thousands of doses of fake vaccines — a cache it said was just the “tip of the iceberg.”