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I haven't offered tourism as a cause: medical experts and frontline doctors across the world, as well as epidemiologists, whose job it is to study the spread of disease, have offered tourism as a cause. There are sound reasons to believe this and sound evidence to support it.
I am not discounting immigration as a factor, but I am placing it in its proper context: it's less important than tourism as a driver of short-term disease progression.
Nor is it an "admission" that vaccine rates are increasing, as if I was hiding this or unaware of it, or as if it undermines the case I'm making. It's a welcome trend, to be sure, but as long as rates are below the WHO target of 95% then it's still not sufficient to contain the spreading of infectious diseases if they catch on in a community.
Incidentally, this is exactly why tourism can be related: a disease only needs to infect one or two people, who then travel to a non-immune community, for it to catch on. Large-scale immigration can, of course, clearly play its part in long-term spreading of disease, but it's usually not a driver in short-term spikes, which is what this is most likely to be.
Your opinion on the authority of authorities is neither here nor there, and smacks of trying to generate the same conspiracy theories that led to Wakefield being taken seriously in the first place.
All you are doing is spreading disinformation, as well as completely irrational distrust in doctors and medical authorities, and there is no reason or justification for it.