It's very safe.
Maybe, but what does it protect from? I hear it can help, but there is no guarantee. I read quite a lot on flu vaccination and one year decided to do it, first just to see if there's any difference. I usually get sick once a year, in winter, then I guess I acquire my immunity for the rest of the year. So I used
, properly. That was the worst winter I remember - I got sick after about a month (don't remember exactly if it was 4 or 6 weeks after vaccination...) in the worst way, couldn't recover for more than 2 weeks - never in my adult life was I feeling so sick. The only difference I made that year was vaccination. I know it could be a coincidence, but I also know my body well and the only conclusion I can make was that this probably happened because of vaccine. Since that time I am not a fan of flu vaccination. I think if you are fairly healthy and have natural immunity in your body that will be enough. I decided not to vaccinate against flu from then on and everything went back to normal: I can get ill once a year, recover after 4-7 days max and that is it.
The greatest scam was with the recent H1N1 flu vaccines: no guarantee it works, no guarantee it is even safe, no responibility and yet almost all the European governments bought loads of them from the pharmaceutical companies giving them unimaginable earnings! Soon it turned out that this kind of flu is nothing serious as it's less dangerous than... normal common flu and that bilions spent on vaccines were wasted. They should fire the people who made the decisions to buy them and possibly prosecute. I read Polish Minister of Health reffrained from buying the vaccines and despite wave of criticism she stuck to her point. After the vaccines turned out to be a hoax no one actually thanked her for saving the Polish government milions...