I'm not positive, but I don't think tamiflu will elminate the possibiilty of catching the flu. It sometimes reduces the length of the illness though. For us, when our 1 year old got the flu, the tamiflu wasn't worth it--we declined it, and she was almost back to normal after 3 days--the tamiflu will sometimes shorten the duration of the flu to 5 days. So, apparently my own toddler healed faster than the tamiflu would have benefitted.
When my 1 year old had the flu, DH did too. But DS and I never got it. So, I personally wouldn't take the risks of the medication if it's not positive you'll get it, and since toddlers who are well nourished and well hydrated prior to the flu can usually heal faster without the medication...
When my 1 year old had the flu, DH did too. But DS and I never got it. So, I personally wouldn't take the risks of the medication if it's not positive you'll get it, and since toddlers who are well nourished and well hydrated prior to the flu can usually heal faster without the medication...