Hi My child was just born May 23,2009 and I will like to know if will be safe to travel with him by plane when he turn 6 weeks and 4 days. I afraid of the baby caching the flu or something else , due to being in a very enclose area for about 3 1/2 hours and expose to so many people while he does not have any vacine due to his very young age. Pleas... more