The human cost of last month's 7.7-magnitude earthquake that rocked Myanmar and Thailand is still rising more than a week later.

Extreme heat and heavy rain in Myanmar could cause disease outbreaks among earthquake survivors camping in the open, global aid bodies warned on Thursday.

B ANGKOK — The death toll from the massive earthquake that hit Myanmar nearly a week ago rose Thursday to 3,085 as search and rescue teams found more bodies, the military-led government said, and humanitarian aid groups scrambled to provide survivors medical care and shelter.

For most of the day, the mood was somber among relatives of dozens of workers missing at the site where a multi-story building collapsed in Bangkok. A volunteer group with sniffer dogs took time away from its grim task of searching the rubble to bring the animals on a visit top help lift their spirit.

The massive destruction across Myanmar after a 7.7-magnitude earthquake struck Southeast Asia is astonishing to see. Yogita Limaye with BBC News, a CBS News partner, reports after getting a rare look inside the country.

United Nations aid chief Tom Fletcher will arrive in earthquake devastated Myanmar on Friday, said U.N. Secretary-General Antonio Guterres as he appealed for more international funding and rapid, unimpeded aid access in the country.

The ruling military junta in Myanmar say the death toll after last week's devastating earthquake now stands at almost 2,900 people. The actual death toll is feared to be much higher, with many people still stuck under the rubble in affected cities.

As the road shook beneath him, Ko Zeyer sped past crumbled buildings, buckled roads and gaping sinkholes toward his hometown of Sagaing, the epicenter of the most powerful earthquake to hit Myanmar in a century.