'Alien abduction' has to be a delusion or hallucination. Statistically, extra-terrestrial life almost certainly exists, but the distances are so vast it's incredibly unlikely they'll ever reach Earth. If they did, they wouldn't be little green men in flying saucers who did nothing but abduct farmers and let them go again.
As for the 'vampire,' it could have been self-immolation.
Not to be rude, but what year exactly are you from?