“The new CDC Guidance is a substantial change,” Delta Variant is the dominant COVID-19 strain.
Health officials say that the Delta Variant has become the dominant strain of COVID-19, and it transmits from person to person far more effectively than the original virus.
Health Officials say that when someone becomes infected, they develop a lot of virus particles, and it only takes one of those particles to be just different enough to be a mutation.
They say that when it continues to pass from person to person, it can change into something that’s no longer recognizable as the original strain. Which can make it more transmissible and harder for antibodies created through vaccination to identify.
Due to the Delta Variant showing signs of this, the CDC has recommended new guidelines in places of high transmission.