The mu COVID-19 strain has genetic differences to the other known variants and is causing infections in multiple countries and mu’s genetic changes might make it more transmissible, allow it to cause more severe disease.
It might make it also stronger against vaccines and may not take into account if a person was previously infected by another variant of the COVID.
Mu is being monitored closely and it is classified as a variant of interest, not as a variant of concern, though it has been spreading around the world.
