Medics treat an injured person at Police Hospital in Kathmandu following a further major earthquake on May 12, 2015 in Kathmandu, Nepal. A 7.3 magnitude earthquake has struck in Nepal only two weeks after more than 8,000 people were killed in a devastating earthquake. The latest quake has struck near Mt Everest near the town of Namche Bazar. Tremors have been felt as far away as Bangladesh and Delhi. (Photo by Jonas Gratzer/Getty Images)

Medics console each other at a Police Hospital in Kathmandu following a further major earthquake on May 12, 2015 in Kathmandu, Nepal. (Photo by Jonas Gratzer/Getty Images)

People gather in the safety of open space following a further major earthquake on May 12, 2015 in Kathmandu, Nepal. (Photo by Jonas Gratzer/Getty Images)

People gather in the safety of open space following a further major earthquake on May 12, 2015 in Kathmandu, Nepal. (Photo by Jonas Gratzer/Getty Images)

A Nepalese victim of Tuesday's earthquake tries to sit up with the help of family members at Teaching Hospital in Kathmandu, Nepal, Tuesday, May 12, 2015. A major earthquake has hit Nepal near the Chinese border between the capital of Kathmandu and Mount Everest less than three weeks after the country was devastated by a quake. (Photo by Niranjan Shrestha/AP Photo)

Rescue workers stand beside a building that collapsed in an earthquake in Kathmandu, Nepal, Tuesday, May 12, 2015. (Photo by Ranup Shrestha/AP Photo)

Nepalese people rush to safety after an earthquake hit Nepal in Kathmandu, Nepal, Tuesday, May 12, 2015. (Photo by Bikram Rai/AP Photo)

A Nepalese man runs to safety after a second earthquake hit Nepal in Kathmandu, Nepal, Tuesday, May 12, 2015. (Photo by Bikram Rai/AP Photo)

Nepalese people position themselves in the middle of a street for safety after an earthquake hit Nepal in Kathmandu, Nepal, Tuesday, May 12, 2015. (Photo by Bikram Rai/AP Photo)

Earthmovers clear debris from the site of a building that collapsed in an earthquake in Kathmandu, Nepal, Tuesday, May 12, 2015. (Photo by Ranup Shrestha/AP Photo)

Nepalese people rush to safer areas as an earthquake hits Kathmandu, Nepal, Tuesday, May 12, 2015. (Photo by Bikram Rai/AP Photo)

A Mexican rescue worker stands at the site of a building that collapsed in an earthquake in Kathmandu, Nepal, Tuesday, May 12, 2015. (Photo by Niranjan Shrestha/AP Photo)

Nepalese people take refuge on a street after an earthquake hit Kathmandu, Nepal, Tuesday, May 12, 2015. (Photo by Bikram Rai/AP Photo)

A man digs on the debris of a collapsed house after a fresh 7.3-magnitude earthquake struck Nepal, in Sankhu. (Photo by Navesh Chitrakar/Reuters)

A woman injured in an earthquake gets a stitch in a field hospital at Sankhu May 12, 2015. (Photo by Navesh Chitrakar/Reuters)

Local residents evacuate from a shop during an earthquake in central Kathmandu, Nepal, May 12, 2015. (Photo by Athit Perawongmetha/Reuters)

People walk past a collapsed building after a fresh 7.3 earthquake struck, in Kathmandu, Nepal, May 12, 2015. A 7.3 magnitude earthquake killed at least 37 people and spread panic in Nepal on Tuesday, bringing down buildings already weakened by a devastating tremor less than three weeks ago and unleashing landslides in Himalayan valleys near Mount Everest. The earthquake was centered 76 km (47 miles) east of the capital in a hilly area close to the border with Tibet, according to coordinates provided by the U.S. Geological Survey. (Photo by Athit Perawongmetha/Reuters)

A rescuer carries a man on his back as authorities carry out rescue operations after a fresh 7.3-magnitude earthquake hit Nepal, in Gyirong county, Tibet Autonomous Region, China, May 12, 2015. (Photo by Reuters/Stringer)

Earthquake victims are kept on the open ground for treatment after the earthquake, in Kathmandu, May 12, 2015. (Photo by Navesh Chitrakar/Reuters)

An earthquake victim reacts in pain after being moved out from the hospital to the open ground for treatment, in Kathmandu, May 12, 2015. (Photo by Navesh Chitrakar/Reuters)

Local residents gather near a campfire in Bhaktapur, Nepal, May 12, 2015. (Photo by Athit Perawongmetha/Reuters)

People stand outside a office building after vacating it following an earthquake in Kolkata, India, May 12, 2015. (Photo by Rupak De Chowdhuri/Reuters)

Local residents evacuate onto a street minutes after an earthquake in central Kathmandu, Nepal, May 12, 2015. (Photo by Athit Perawongmetha/Reuters)

A woman injured in an earthquake walks toward a hospital soon after the earthquake in Sankhu, Nepal May 12, 2015. (Photo by Navesh Chitrakar/Reuters)

Nepalese military personnel stands on a collapsed building after earthquake in centre of Kathmandu, Nepal, May 12, 2015. (Photo by Athit Perawongmetha/Reuters)

A man speaks on his mobile phone after an earthquake in central Kathmandu, Nepal, May 12, 2015. (Photo by Athit Perawongmetha/Reuters)

A woman speaks on her mobile phone as she stands with others after vacating their office buildings following an earthquake in Kolkata, India, May 12, 2015. (Photo by Rupak De Chowdhuri/Reuters)

People stand on a road divider after vacating their office buildings following an earthquake in Kolkata, India, May 12, 2015. (Photo by Rupak De Chowdhuri/Reuters)

A Nepalese women holds her daughter after evacuating to a street minutes after earthquake in central Kathmandu, Nepal, May 12, 2015. (Photo by Athit Perawongmetha/Reuters)

Nepalese military personnel stands on a collapsed building after an earthquake in the centre of Kathmandu, Nepal, May 12, 2015. (Photo by Athit Perawongmetha/Reuters)

Nepalese military personnel and International rescue check on a collapsed building after an earthquake in the centre of Kathmandu, Nepal, May 12, 2015. (Photo by Athit Perawongmetha/Reuters)

A woman is rushed to a hospital after she fainted following an earthquake in Siliguri, India, May 12, 2015. (Photo by Reuters/Stringer)

Local residents evacuate onto a street minutes after an earthquake in central Kathmandu, Nepal, May 12, 2015. (Photo by Athit Perawongmetha/Reuters)

Local residents comfort each others during an earthquake in central Kathmandu, Nepal, May 12, 2015. (Photo by Athit Perawongmetha/Reuters)

Local residents comfort each others during an earthquake in central Kathmandu, Nepal, May 12, 2015. (Photo by Athit Perawongmetha/Reuters)

A U.S. rescue team member walks above debris in search for survivors after the earthquake in Kathmandu May 12, 2015. (Photo by Navesh Chitrakar/Reuters)

A U.S. rescue team member along with a sniffer dog searches for victims on a collapsed house after the earthquake in Kathmandu May 12, 2015. (Photo by Navesh Chitrakar/Reuters)

An armed police personnel looking for survivors stands in front of a collapsed house after the earthquake in Kathmandu May 12, 2015. (Photo by Navesh Chitrakar/Reuters)

Nepalese police personnel run to rescue earthquake victims believed to be trapped after the earthquake in Sankhu May 12, 2015. (Photo by Navesh Chitrakar/Reuters)

Nepalese military personnel remove debris in search of survivors after a fresh 7.3 earthquake struck, in Kathmandu, Nepal, May 12, 2015. (Photo by Athit Perawongmetha/Reuters)

Nepalese military personnel remove debris in search of survivors after a fresh 7.3 earthquake struck, in Kathmandu, Nepal, May 12, 2015. (Photo by Athit Perawongmetha/Reuters)

Local residents evacuate onto a street minutes after a fresh 7.3 earthquake struck, in central Kathmandu, Nepal, May 12, 2015. (Photo by Athit Perawongmetha/Reuters)

Local residents fall down as they evacuate from a shop during a fresh 7.3 earthquake, in central Kathmandu, Nepal, May 12, 2015. (Photo by Athit Perawongmetha/Reuters)

A girl lies on a bed after being moved out from the hospital to the open ground for treatment, in Kathmandu, May 12, 2015. (Photo by Navesh Chitrakar/Reuters)

Local residents gather inside their temporary makeshift shelter after a fresh 7.3 earthquake struck, in Bhaktapur, Nepal, May 12, 2015. (Photo by Athit Perawongmetha/Reuters)