For the past 10 years, the world has seen extraordinary increases in viral and parasitic infections transmitted by insects and snails. (Yes, snails — they carry parasitic diseases in much the same way insects do) These infections, also known as vector-borne tropical diseases, will significantly and adversely affect the major economies of Europe, the Middle East, Oceania, and the Americas.

https://news.vice.com/article/zika-virus-ghostbusters-tropical-disease-pandemics