Illness is complicating Australia's plans for their ODI series-opener against Pakistan, with Glenn Maxwell unable to train on Wednesday.

Sick: Glenn Maxwell on the run for Australia against India last month. Credit:AP

Maxwell was a notable absentee from Australia's main session in Sharjah prior to Friday's five-match series opener at the same venue.

It came a day after Pat Cummins and Nathan Lyon were both told to skip training.

Lyon had been floored by the same bug that Maxwell is now struggling with, while Cummins was managed because of workload concerns.