mRNA is basically a genetic code that tell the body to make proteins otherwise expensive to make. The technology has been used by laboratories in the fight of COVID19. This include Pfizer, Moderna and Biotech laboratory companies. Moderna is working with AstraZeneca to develop a protein that could help with treatment of heart diseases.
According to the New Scientist, BA.2 which is a variant of Omricon has been spreading. It said to be different from BA.1 with 28 different mutations. It appears that nations that have totally avoided infections are more suspectable to infections from mutated viruses. Fortunately deaths and infections were lower in South Africa.