Argentina's president Cristina Fernandez has checked into a Buenos Aires hospital for treatment for an "infectious fever".
The presidential medical unit said the 61-year-old president entered the Sanatorio Otamendi clinic after feeling ill yesterday afternoon.
It gave no details about the ailment besides describing it as an "infectious fever".
In mid-October, doctors told the president to rest for 48 hours in order to recover from a sore throat.
In January, Ms Fernandez was treated for hip pain and sciatica, and in July she missed Independence Day celebrations to continue recovering from an acute throat infection.
Last year, she underwent head surgery to remove a blood clot. A 40-day period of silence between December and January caused concern over her condition.