A doctor in Madrid says the Spanish nurse infected with Ebola remembers touching her face with her gloves after treating a dying priest.

The nurse, Teresa Romero, is the first person known to have contracted the deadly virus outside West Africa.

She had treated two Spanish missionaries who later died from Ebola.

Ms Romero, a 40-year-old auxiliary nurse, remains in quarantine in the Spanish capital along with her husband and three other people, BBC reports.

She told the El Pais newspaper that she might have become infected when removing her protective suit after cleaning Mr Garcia Viejo's room.

"I think the error was the removal of the suit," she told El Pais by phone. "I can see the moment it may have happened, but I'm not sure about it."

She added that she did not have a fever on Wednesday and was "doing better".