I am interested in your definition of "vector", CC. It usually has a specific meaning in epidemiology - a "third party species" or other mechanism responsible for the transmission of an "agent" that infects a "host". Like a mosquito in the transmission of malaria to humans. Another relevant concept is that of a "reservoir", which is an alternative host species - the "reservoir host" in which the agent can survive. This was something that was raised as a possibility issue in the early stages of this pandemic but that question has gone quiet.
Of course a "super spreader" could loosely be termed a vector, but in that looser sense every infected person who infects another would count as a vector. The reason to be clear on this is we are still learning about the transmission of Covid-19 and may yet turn up other potential hosts - pigs or domestic species for example - or true "vector species" we have not yet considered - perish the thought.
The word "herd" is being used in our discussions, and it has a certain charm - not least because our local GPs use the expression "Vaccinate the whole herd" when doing the 'flu vaccinations!
Roger
Originally Posted by: Roger Parsons