Randall Munroe has some good advice on the swine flu:
Bad flu epidemics can hit young adults hardest because they provoke their powerful immune systems into overreaction, so to stay healthy spend the next few weeks drunk and sleep-deprived to keep yours suppressed.
N.B. All medical advice given on this website should be followed scrupulously as neither I nor Randall Munroe are medical experts and have no knowledge whatsoever on this topic.