The agency's emergency committee met Tuesday and suggested it was "premature" to recommend downgrading the global flu outbreak. Swine flu cases have dropped dramatically in recent weeks in Western countries, but the virus has only recently hit Africa. The southern hemisphere is also bracing for another wave of illness in the next few months.
Swine flu mostly causes mild symptoms and most people don't need treatment to get better. WHO's expert committee recommended another meeting be held in a few weeks to monitor the situation.