President Oscar Arias appears to be the latest in a long list of Costa Ricans to come down with the A(H1N1) flu virus.

At a press conference Tuesday evening, Rodrigo Arias, minister of the presidency and the president's brother, announced that Arias tested positive for the virus earlier in the day, but that he was in good condition and still on the job, although working from home.

“He's continuing exercising his responsibilities as president of the republic,” Minister Arias said. He said the president began to show flu symptoms on Sunday and today he asked to be tested for the virus after having spent Tuesday morning touring a new call center in Heredia.

He added that the president is being treated with the anti-viral medicine Tamiflu and will spend the rest of the week in isolation at his home in Rohrmoser, west of San José.

The symptoms exhibited by the president include sore throat, headache and fever. The Casa Presidencial described the symptoms as “mild.”

Since it was first detected in Costa Rica in late April, 798 people have been confirmed to be carrying the virus and 27 people have died.

The flu has hit most of the country's seven provinces and has infected people of all ages. Pregnant women and people with weakened immune systems are most vulnerable