H Hasan New member 4 Ara 2022 #1 Drop in Covid-19 alertness could create 'deadly new variant', warns WHO chief "Today, there are over 500 sublineages of Omicron circulating. They are all highly transmissible," WHO Director-General Tedros Adhanom Ghebreyesus said.
Drop in Covid-19 alertness could create 'deadly new variant', warns WHO chief "Today, there are over 500 sublineages of Omicron circulating. They are all highly transmissible," WHO Director-General Tedros Adhanom Ghebreyesus said.
