Rescue workers saved a 63-year-old woman from the rubble of a building in Burma's capital on Tuesday, but hope was fading of finding many more survivors of the violent earthquake that killed more than 2,700 people, compounding a humanitarian crisis caused by a civil war.

The fire department in Naypyitaw said the woman was successfully pulled from the rubble 91 hours after being buried when the building collapsed in the 7.7 magnitude earthquake that hit midday Friday. Experts say the likelihood of finding survivors drops dramatically after 72 hours.

The head of Burma's military government, Senior Gen. Min Aung Hlaing, told a forum in Naypyitaw, that 2,719 people have now been found dead, with 4,521 others injured and 441 missing, Myanmar's Western News online portal reported.

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Those figures are widely expected to rise, but the earthquake hit a wide swath of the country, leaving many areas without power, telephone or cell connections and damaging roads and bridges, leaving the full extent of the devastation hard to assess.

Most of the reports so far have come from Mandalay, Burma's second-largest city, which was near the epicenter of the earthquake, and Naypyitaw.

"The needs are massive, and they are rising by the hour," said Julia Rees, UNICEF's deputy representative for Burma.

"The window for lifesaving response is closing. Across the affected areas, families are facing acute shortages of clean water, food, and medical supplies."

Burma's fire department said that 403 people have been rescued in Mandalay and 259 bodies have been found so far. In one incident alone, 50 Buddhist monks who were taking a religious exam in a monastery were killed when the building collapsed and 150 more are thought to be buried in the rubble.

The World Health Organization said that more than 10,000 buildings overall are known to have collapsed or been severely damaged in central and northwest Burma.

The earthquake also rocked neighboring Thailand, causing a high-rise building under construction to collapse and burying many workers.

Two bodies were pulled from the rubble on Monday and another was recovered Tuesday, but dozens were still missing. Overall, there were 21 people killed and 34 injured in Bangkok, primarily at the construction site.

In Burma, search and rescue efforts across the affected area paused briefly at midday on Tuesday as people stood for a minute in silent tribute to the dead.

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Foreign aid workers have been arriving slowly to help in the rescue efforts, but progress was still slow with a lack of heavy machinery in many places.

In one site in Naypyitaw on Tuesday, workers formed a human chain, passing chunks of brick and concrete out hand-by-hand from the ruins of a collapsed building.

The Burma military government's official Global New Light of Burma reported Tuesday that a team of Chinese rescuers saved four people the day before from the ruins of the Sky Villa, a large apartment complex that collapsed during the quake. They included a 5-year-old and a pregnant woman who had been trapped for more than 60 hours.

The same publication also reported two teenagers were able to crawl out of the rubble of the same building to where rescue crews were working, using their cellphone flashlights to help guide them. The rescue workers were then able to use details from what they told them to locate their grandmother and sibling.

International rescue teams from several countries are on the scene, including from Russia, China, India, the United Arab Emirates and several Southeast Asian countries. The U.S. Embassy said an American team had been sent but hadn't yet arrived.

Meantime, multiple countries have pledged millions in aid to assist Burma and humanitarian aid organizations with the monumental task ahead.

Even before the earthquake, more than 3 million people had been displaced from their homes by Burma's brutal civil war, and nearly 20 million were in need, according to the U.N.

Many were already lacking in basic medical care and standard vaccinations, and the destruction of water and sanitation infrastructure by the earthquake raises the risk of disease outbreaks, warned the U.N.'s Office for the Coordination of Humanitarian Affairs.

"The displacement of thousands into overcrowded shelters, coupled with the destruction of water and sanitation infrastructure, has significantly heightened the risk of communicable disease outbreaks," OCHA said in its latest report.

"Vulnerability to respiratory infections, skin diseases, vector-borne illnesses such as dengue fever, and vaccine-preventable diseases like measles is escalating," it added.

Shelter is also a major problem, especially with the monsoon season looming.

Since the earthquake, many people have been sleeping outside, either because homes were destroyed or out of fear of aftershocks.

Burma's military seized power in 2021 from the democratically elected government of Aung San Suu Kyi, sparking what has turned into significant armed resistance and a brutal civil war.

Government forces have lost control of much of Burma, and many places were dangerous or impossible for aid groups to reach even before the quake.

Military attacks and those from some anti-military groups have not stopped in the aftermath of the earthquake, though the shadow opposition National Unity Government has called a unilateral ceasefire for its forces.

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The NUG, established by elected lawmakers who were ousted in 2021, called for the international community to ensure humanitarian aid is delivered directly to the earthquake victims, urging "vigilance against any attempts by the military junta to divert or obstruct humanitarian assistance."

"We are in a race against time to save lives," the NUG said in a statement.

"Any obstruction to these efforts will have devastating consequences, not only due to the impact of the earthquake but also because of the junta's continued brutality, which actively hinders the delivery of lifesaving assistance."

It wasn't immediately clear whether the military has been impeding humanitarian aid. In the past, it initially refused to allow in foreign rescue teams or many emergency supplies after Cyclone Nargis in 2008, which resulted in well more than 100,000 deaths. Even once it did allow foreign assistance, it was with severe restrictions.

In this case, however, Min Aung Hlaing, pointedly said on the day of the earthquake that the country would accept outside help.

Tom Andrews, a monitor on rights in Burma commissioned by the U.N.-backed Human Rights Council, said on X that to facilitate aid, military attacks must stop.

"The focus in Burma must be on saving lives, not taking them," he said.