Damn.
As if risk of tick-borne encephalitis (which can be vaccinated against) wasn't enough, now there apparently is a risk of mosquito-borne encephalitis. And this particular virus has killed one person whose work I valued very much (alongside thousands of others during decades, of course).
It spreads sporadically however, and doesn't transmit between humans in easy ways - so it has been poorly researched and there is no vaccine. I hope there will be one soon enough. Creating vaccines has become considerably easier thanks to the rush to create COVID vaccines. Validating them without emergency regulations and special permissions is a long process however.
Edit: a vaccine against this stuff is likely close enough. And if there is a vaccine, there is soon also an antibody product which can be used to save an unvaccinated person if it gets severe.
As of 2019, six vaccines had progressed to human trials but none had been licensed in the United States. Only the two live attenuated vaccines produced strong immunity after a single dose.[98]