Colombia President Álvaro Uribe has been diagnosed with H1N1, prompting urgent checks into the health of other South American leaders he met at the Union of South American Nations summit last week, the Guardian reported.

The Colombian leader has been kept partly secluded in an office at the presidential palace in Bogota. "This isn't something that has us scared," Diego Palacio, the social protection minister, told a news conference on Monday.

Neither the president's traveling companions nor the other heads of state with whom he came into contact at the summit have reported symptoms.