Fortunately it sounds very contained. All cases (fewer than 15) were confined to a single location and there haven’t been any more detected since September. So most likely the mutation is now extinct.
I’m not saying anything with certainty. However, a lot of work has been expended in trying to contain this cluster and currently this is how it looks with the data we currently have.
It's not just this cluster though. If it happens once it could happen again and we may not notice the next until it's too late. So here's hoping the vaccine catches all likely mutations too...
