Two people may not have died of swine flu complications if their treatment at South Australian hospitals had been better managed, a coroner has found.

Deputy State Coroner Anthony Schapel made recommendations including that the health minister ensure country hospitals are staffed with appropriate medical expertise.

In his inquest findings delivered on Friday, the coroner said Angela Catherine Fensom, 41, of Tantanoola, died at nearby Millicent Hospital, in the state's southeast, on August 18, 2009.

Andrew Johaanes Taankink, 26, of Mount Gambier, was admitted to Mount Gambier Hospital, also in the southeast, before he died at Adelaide's Flinders Medical Centre on October 1, 2009.

The coroner said both patients died of swine flu complications and their chances of survival would have been greater had their treatment been better managed.

He found Mr Taankink's clinical management within Mt Gambier hospital and Ms Fensom's in Millicent hospital had been "sub-optimal".

As well as ensuring country hospitals were appropriately staffed, Mr Schapel said the health minister should ensure patients admitted to them were properly and regularly reviewed by a medical practitioner of appropriate and relevant experience.

He also called on the minister to ensure systems and protocols in all South Australian hospitals were designed to enable medical staff to appropriately respond to a deteriorating patient.