I did some research over the summer on Anopheles gambiae, a mosquito that spreads malaria, and I was stunned to learn how many diseases are spread by mosquitoes. There are tons of viruses (yellow fever, dengue, West Nile), protozoa (like malaria), and even parasitic worms (lymphatic filariasis--the pictures of this are awful). Hundreds of millions of people are infected with these diseases every year, and I'm a bit shocked of how ignorant I was to this. Malaria eradication has stalled over the last decade [0], and I hope that we can resume it.

[0] https://anopheles-genomic-surveillance.github.io/home.html