"At work !! #KBC .. still struggling with ailment .. nothing easily achieved in life ..' jab tak jeevan hai tab tak sunghursh hai' !!" Bachchan tweeted on Tuesday.
Bachchan earlier tweeted about his health and urged his fans not to panic over the issue.
"OK ....nothing to panic ... I am down with fever .. and stomach infection .. my time today regretfully shall be limited to this only," the actor said.
He turned 71 years on Friday.
--IBNS (Posted on 16-10-2013)