Oh PLEASE !
Of course there is some impact of climate change - but in this particular instance entirely negligible and irrelevant. When I started my global busines travels our company's medical department injected me and gave me pills for diseases and parasites I never heard of before, and I got a long lecture about the fun of getting tropical diseases or parasites traversing unsanitary Third World  enclaves.  The only reason we don't hear about them is that our modern medicine has limited their impact ( resulting in overpopulation ) and we stay in tourist resorts  .-) 

Reality is that these viruses, infections, bugs, parasites .... are endemic and climate change will have minimal impact. 

A sideline - during construction of the Rideau Canal system Malaria was a problem in Ontario !