@Sharn ************
. There has never been a flu vaccine in history that was100% effective in stopping contraction or transmission. Until that day comes, i don't see the risk is worth it. Flu viruses can mutate rendering vaccines useless to new strains . And flu vaccines essentially give you a very mild case of the flu which allows you to build antibodies to it without getting severely sick. Its your own antibodies that fight it and protect you from getting the same strain again. Doesn't stop you from transmitting the flu from one person to another eg body contact from carrier, to you , to a non carrier