I am undergoing Tamiflu medicine for 3 days and 2 days more dose is remaining. My health has improved in last 2 days but I wonder how can I be sure 100 % that I do not have any virus after 5 days or that people around me are safe and cannot get affected by me?
you live to worry
I am afraid Tamiflu is not a treatment for flu though it does marginally shorten the illness and reduce symptoms. We still mainly rely on our own body defences to overcome the condition. In general the flu virus will have cleared from most otherwise healthy individuals within 5 days anyway.
Good news a vaccine is on the way and should be available by the autumn to provide a preventative, however it is not clear how many doses will become available initially and who will have priority for the vaccine.