The death toll in the Myanmar earthquake has reached 2,886, with 4,639 injured and 373 missing, China's state-run Xinhua reported on Wednesday, citing Myanmar's state administration council information team.

Hopes are fading for people trapped beneath rubble in Myanmar and Thailand with the passing of a crucial 72-hour rescue window after which survival rates fall sharply.

The magnitude 7.7 quake Friday rocked an impoverished Southeast Asian nation already beleaguered by years of civil war.