Delta still dominates say experts urging third jab
Delta has proved able to evade vaccine defences against transmission better than the Alpha, Beta and Gamma Covid variants.
PREMIUM Health
jabs have remained highly effective at preventing severe illness from Delta, lowering the risk of overwhelming hospital resources. (AFP)
NewVision Reporter
@NewVision
No one knows how effective vaccines will be in stopping people catching the newly discovered and fast-spreading Omicron variant of Covid-19 or how well they will protect against severe illness.
Lab