1700 treated by AusMAT in the Philippines

A 37-strong team of doctors, surgeons, anaesthetists, nurses, paramedics, logisticians and a pharmacist will leave Darwin on Wednesday to replace the first team sent from the National Critical Care and Trauma Response Centre (NCCTRC) after the devastating Typhoon Haiyan.

They established a 60-bed field hospital near the Tacloban airport to perform vital surgeries, and their two-week rotation is nearing its end.

"They're tired, it's fair to say," Team Bravo leader Dr Nicholas Coatsworth told reporters. 

"We're looking forward to getting there and helping them out."

Team Alpha is performing more than 20 surgeries and seeing between 150 and 190 patients a day. More than 1700 have been treated in 12 days.

By the end of the second deployment in another fortnight, AusMAT expects to have seen 3500 people.

The biggest challenge has been the number and severity of injuries, Dr Coatsworth said.

"The guys have