De Rato was referring to a global credit liquidity squeeze that has resulted from a meltdown in the U.S. subprime lending market. "The IMF continues to think that the crisis is serious," he said.
"Much has to do with the duration of the crisis, because the longer it goes on, the bigger will be its effects," de Rato said. In 2008, de Rato said, global growth "will remain strong, but will be slightly inferior to 2006 and 2007." He also added that the risks to economic growth are on the downside."
The IMF will publish updated estimates for world growth in October.