How deadly is Omicron sub-variant BA.4, know what experts say

How deadly is Omicron sub-variant BA.4, know what experts say - BA.4 is responsible for a large wave of Covid in South Africa and is capable of affecting the immune system provided by infection and vaccination.

Related Keywords

South Africa ,Hyderabad ,Andhra Pradesh ,India ,Maria Van Kerkhove ,Soumiya Swaminathan ,Consortium On Genomics ,Genomic Surveillance Program ,National Center ,Disease Control ,Omicron Ba 4 ,Omicron Subvariant ,A 4 And Ba 5 ,Omicron Sub Variant ,Ovid 19 Sub Variants ,Insacog ,Omicron Case ,Ub Lineage Ba 2 ,