Tasmania has over-reported coronavirus cases by more than 1300 because of data errors, as well as infections being counted twice.
The island state's cumulative tally will be corrected and shifted downwards by 1333, about four per cent of its overall number of recorded cases, in Tuesday's figures.
Premier Peter Gutwein said the miscalculations were due to a system error, plus "some double counting" that occurred when rapid antigen positive test results began to be included in daily numbers.
