Journalist Michael Usher and his 60 Minutes crew have been screened for the Ebola virus after returning from Sierra Leone.

A spokesman from the Nine Network has told AAP that the crew were detained for five hours at Sydney Airport this morning, and screened for the deadly virus as a precautionary measure.

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The 60 Minutes team, including Usher, had been in the African country filming a story about the Ebola crisis.

They are believed to have come into contact with an Ebola burial site for victims who died of the disease, according to Nine MSN.

As well as being isolated and screened by Customs and Quarantine, a medical team from the NSW Department of Health also assessed the team.

The crew all received normal readings from their tests.