Though the WHO says the risk of catching Covid-19 from frozen food is low, China has repeatedly sounded alarms after detecting the virus on packaging of products ranging from German pork knuckles to Ecuadorian shrimp, triggering disruptive import bans, Reuters reported.

China, which has used drastic measures to control the spread of the novel coronavirus, this week tightened restrictions requiring “full coverage” testing and disinfection of imported food products, following a smattering of positive samples detected on beef, pork and seafood.

The country has suspended imports of 99 suppliers from 20 countries, the National Health Commission said on Thursday.