Swine Flu, infants and travelling

We have to travel this holiday season by plane. What is the best way to protect our 5.5 month old, breastfed(only), unvaccinated baby from swine flu and other illnesses?

Keep the baby’s nasal passages moist with drops of breastmilk on the plane every hour or so.  Keep the baby to yourself (no passing around among large groups of relatives unless you question each one about being sick).  Use sanitizer cleaner on anything baby plays with.  Other than that, not sure there’s much else you can do.