Thanks for your time. I do appreciate this thread and the answers.

Many years ago there was a 60 Minutes type programme discussing how the flu vaccine is made. The gist of it was there are many, many flus at any given time on the earth and trying to pick which one(s) were going to come to your area of earth was, basically, a guessing game. This is why, during some years, the flu vaccine was ineffective because the ‘wrong’ flu was picked. Is this still an issue or has our ability to track and predict flu patterns better thereby making the flu vaccine more accurate?