Flu...
Well, the only time that I've ever been sick in the last 15 years, has been when I've had a flu shot. Each time I get it, within 6 hours, I get sick and am 'out of it' for 2 or 3 days. I talked it over with my flt surgeon and he doesn't recommend getting in, in my case. Everyone else might be different as each body is unique. I haven't had a vaccination in 4 years and haven't been sick.