26-12-2021, 09:10 PM
(26-12-2021, 09:03 PM)theold Wrote: 4th Dose: Omicron-specific vaccine. Coronavirus has changed, duplicate wrongly, to become mild.
The 4th dose of vaccine may be needed to combat against Omicron virus. But will we need to be vaccinate with a 5th booster if there are mutated Covid-19 viruses.......?