The expansion around the world of the omicron variant of Covid-19 has been uncontrollable.
To contain its spread in the port city of Tianjin, China, a new massive round of tests was started.
In the video we show you how they are preparing.
New round of massive covid-19 testing kicks off in Tianjin, China
2022-01-12T18:22:32.237Z
The expansion around the world of the omicron variant of Covid-19 has been uncontrollable. To contain its spread in the port city of Tianjin, | World | CNN