The UN says its first aid flight has now arrived in Burma, bringing much needed relief to up to one million people made homeless by Cyclone Nargis.The flights had been delayed because of Burma's reluctance to accept help, causing growing international concern.
The US says it has not yet been given permission to fly aid into Burma - despite earlier reports that it had.
Burmese state media say 22,980 people were killed by Nargis but there are fears the figure could rise to 100,000.
The cyclone smashed into the low-lying Irrawaddy delta region on Saturday.
The BBC's Paul Danahar, who is in southern Burma, says he has seen the terrible trail of destruction, with survivors scavenging to find some shelter.
They are living among thousands of corpses, polluting their environment, and the risk of disease taking hold is getting worse by the day.
Normally after a natural disaster, he says, roads are choked by the relief effort, but those into the Irrawaddy delta are empty.
Delays
The first UN relief plane arrived in Rangoon on Thursday from Italy, carrying high-energy biscuits, medicine and other supplies.
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