The Vancouver Island Health Authority says it has released most of the Tamil migrants hospitalized after arriving in Canada aboard a cargo ship on Friday.

Spokeswoman Shannon Marshall says little information can be disclosed about the health of those still being treated.

But she says doctors have not seen any evidence of communicable disease.

That rules out worries that some of the 490 migrants could have contracted tuberculosis during the gruelling three month voyage from south Asia.

Marshall could not release the sex, age or number of those still in hospital but agreed VIHA is carrying for less than 10 migrants -- but more than two.

A spokesman for the Public Health Agency of Canada was expected to offer further details about the hospitalized migrants at a news conference set for Saturday afternoon in Victoria.