The state government is “doing all it can” to secure more ventilators as a united group of medical specialists warn him of a dire shortage.

Almost 50 of the state’s most senior medical professionals warned WA Premier Mark McGowan in a letter that 400 extra Intensive Care Unit ventilators would be needed a day if immediate and widespread isolation measures weren’t implemented.

Mr McGowan on Sunday said he hadn’t seen the strongly-worded letter but the government was doing all it could to secure more vital equipment to deal with the pandemic.

“We’re doing everything we can to secure more ventilators, nationally and internationally,” he said. “We have got people working on factories or local manufacturing of ventilators as we speak."

Mr McGowan could not confirm how many ventilators the state had but a staffer confirmed there were currently about 100 in the system and an additional 100 were on their way to WA.