There were new fears last night that President Obama may have been exposed to swine flu.
A member of the White House team that went with him to Mexico last month is suspected of contracting the disease. The man, a security agent, fell ill in Mexico on April 16 - the day Mr Obama was in the Mexican capital.
The agent's wife, son and nephew were also infected with flu and all four tested as 'probable' for the swine flu virus. They have since recovered.
The archaeologist Felipe Solis, that shook Obama's hand, that died on April 16, did not have swine flu. He had pneumonia.