I actually had to get a hepatitis vaccine to work at a project. They did bloodwork on everyone beforehand. Me and another guy older than me were the only ones who had to also get MMR vaccines because apparently the ones we got as children were no longer effective. The whole 'born before 89' thing is no joke.
I don't kill spiders. I generally just let them be unless they're on me without me knowing it, because then when I notice it all bets are off no matter what kind of bug it is.
Not if I'm already in the lane. If I have to merge into the lane, I usually leave my turn signal on until it shuts off when I make the actual turn. If I'm already in the lane and it's turn-only you don't need it, on the highway anyway. If you're talking about intersections and stoplights like in the city and surrounding areas, I always use turn signals at those.
Anxiety is a bitch