David Furnish was worried for Elton John's life

Filmmaker David Furnish says he was "scared and frightened" when his husband Elton John was struck down with a potentially-deadly infection.

The "Rocket Man" hitmaker spent a few nights in intensive care in April after he fell ill while travelling on a flight back to the UK from Santiago, Chile.

Furnish, who has sons Zachary, six, and Elijah, four, with John, says it was a testing time for the family, reported Daily Mirror.

"We were all very frightened and very scared. The kids understood daddy wasn't well. They didn't know the seriousness of it, obviously, but they came to visit him in hospital as that was an important part of keeping the patient's spirits up.

"We didn't give them the full lowdown because we didn't want to overwhelm them," Furnish says.