A new study has found that a subvariabt of Omicron Covid is substantially more infectious than the original strain, and more likely to be able to beat vaccine immunity.
People with Stealth Covid - named because it is cannot be differentiated with a PCR test - are 33% more likely to infect someone else than people with original Omicron.
Researchers in Denmark found the BA.2 subvariant of the Omicron COVID-19 variant is more transmissible than BA.1 - original Omicron.