Tweety - I'm by no means an expert on infectious disease, but, to my limited knowledge, I have NEVER heard of anyone being a carrier
of the Flu virus, without being symptomatic. I think some people get carried away with self-righteousness. Think about it: If you're exposed to the flu, your body either destroys it on sight because it is immune to that particular strain, or it infects you. If it's destroyed, there is no virus to spread. If it infects you, you WILL have symptoms.
On the subject of the shot - I have never gotten one, and don't plan to. The flu vaccine is a lottery. Experts predict which particular strain may
be the most common in any given year, and produce a vaccine for that strain. There have been years that they have been way off base (though I admit I can't remember where I read that). At best, it may give people a slight edge, better odds if the strain they are vaccinated against is actually the strain in their community that year. Nobody can tell how many people could have been infected if they weren't vaccinated. Who's to say it has made an impact at all? Flu is fickle. 6 years ago, my son came home with it. I came down with it 2 weeks later. My other 2 kids and husband didn't get it. None of them were vaccinated, or had ever had flu before.
With the shortage of vaccine that we usually see, I'm all for at risk
people receiving it. Meaning people who may die if they come down with flu. Think of all the elderly, and at risk people who weren't able to receive it last year because thousands had already been given to healthly health care workers.
I think the person you who told you pulled that information out of the dark cavities of her own behind. She has her opinion, which, of course, is the only one with any validity, and is enjoying making you feel guilty for something.
disclaimer: The preceeding post is my own personal opinion.