Queensland Covid: doctors demand probe into how medical workers at centre of outbreak became infected

Two cases in one hospital obviously raises concerns', doctors' union says, as it is revealed most at-risk health workers didn't have masks properly fitted

• Experts say hospitals already stressed' and health workers exposed
• Queensland Covid hotspots
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The Queensland doctors' union has called for a full investigation into how a doctor and nurse at the same Brisbane hospital contracted coronavirus, leading to two separate clusters of community transmission and a city-wide lockdown.

The latest information state authorities have released suggests the spread of at least 15 cases of coronavirus began with separate infections acquired within the Princess Alexandra hospital at Woolloongabba.