With more than 2,700 people killed in the Myanmar earthquake, the lack of water and medication gets worse.

Myanmar (Reuters) — Shelter, clean water, and medication are in limited supply following Myanmar’s earthquake, which inflicted major structural damage and a catastrophic human toll, the United Nations Office for the Coordination of Humanitarian Affairs (OCHA) stated on Tuesday.

A 7.7 magnitude earthquake on Friday killed over 2,700 people and wounded over 4,500, severely damaging essential infrastructure such as bridges and highways.

“The time frame for vital search and rescue is shortening… Shelter, clean water, and medications are in short supply. People in impacted regions spent the night outside since there is no electricity or running water,” OCHA’s Myanmar Resident and Humanitarian Coordinator Marcoluigi Corsi told reporters in Geneva via video connection from Yangon.

Multiple UN agencies have issued warnings about a drinking water deficit, raising fears about the spread of cholera.

“It is absolutely bad – the most immediate need is water, and it is quite hot out there… “Water pipes and septic tanks have broken,” stated Julia Rees, UNICEF’s Deputy Representative, via video connection.

The World Health Organization said that hospitals were overcrowded, medical supplies were running low, and there were running water and fuel shortages.

The UN refugee agency, UNHCR, has declared the situation a major humanitarian catastrophe and is mobilizing supplies such as plastic sheets, sleeping bags, and mosquito nets.

Response operations have been delayed by major damage to roads and bridges, resulting in UNHCR teams taking 13 hours to reach Mandalay from Yangon, a travel that should normally take eight hours, according to the agency.

“The most immediate needs are shelter and humanitarian supplies… There is also a risk of explosive ordnance resulting from the last four years of active warfare,” UNHCR official Babar Baloch told reporters in Geneva.