The English and the Celts - no genocide?

[Felix]

Please explain why you think this would be the case. Were the rats afraid of the Germanic language?

... If the germanic speaking areas are to get the plague, they have to either trade with the Mediterranean world directly, or trade with those infected British areas. The lack of plague, mediterranean imports or other british goods in the germanic speaking areas suggests neither.

...
Harry Amphlett

I had thought that the North did have noticeable Roman imports - the deposits in Illerup Adal showing Roman manufactures, as well as other bog sites. So the lands the germanic invaders came from would have possibly been exposed to plagues (do we know that this disease really was bubonic plague?). Were the Angles and Saxons really isolated from their Continental brethren?