B.1.640 was classified as a "Variant Under Monitoring" by @WHO in Nov

See link for more info on variants we are tracking. @WHO @GISAID & partners have robust system for detecting, assessing, classifying, info & sequencing sharing for decision making.https://t.co/Hq7RkuWQwx https://t.co/ZBBCGh9dFW pic.twitter.com/WwMBtlk3Zl

— Maria Van Kerkhove (@mvankerkhove) January 3, 2022