Silverchair has postponed four shows on their current U.S. Tour to allow singer, Daniel Johns to recover fully from a case of laryngitis.

Daniel caught the common viral infection of the throat earlier this week after flying Sydney/Los Angeles/Toronto/New York/Los Angeles over just four days. It severely impeded his vocal performance on the "Tonight Show With Jay Leno" on Tuesday.

While his Doctor had initially been hopeful that Daniel's laryngitis would clear up "in a day or two", he has since advised that the Silverchair frontman should "avoid singing for 4 to 6 days" in order to be guaranteed of making a full recovery. The Doctor also advised that singing during this time could risk permanent damage to Daniel's voice so the band has no choice but to reschedule these four important shows and to sincerely apologize to those who will be inconvenienced by this change of plans.

The San Diego, Anaheim, Los Angeles and San Francisco gigs will now take place in mid-November at the same venues. New dates are as follows:

Anaheim - House Of Blues - Rescheduled for Wednesday November 14
San Diego - House Of Blues - Rescheduled for Friday November 16
San Francisco - The Independent - Rescheduled for Sunday November 18
Los Angeles - The Wiltern - Rescheduled for Tuesday November 20

Patrons holding tickets for the original dates simply need to retain them and use them to gain admission to the rescheduled dates. Otherwise they can seek refunds from their place of purchase.

Dates for the rest of Silverchair's Young Modern World Tour are not expected to be affected in any way by this temporary throat infection.

Again, while it is obviously beyond their control, Silverchair apologizes for the inconvenience caused by this unfortunate turn of events.