Prime Minister Sushil Koirala on Thursday visited the town of Charikot and said the country was "not prepared for a second one so big."
At least 65 people are dead In Nepal after Tuesday's earthquake while 17 were reported dead in neighboring India.
The 7.3-magnitude earthquake struck the district of Dolakha, some 47 miles northeast of Kathmandu, according to the USGS.
After a second earthquake, locals and aid workers must start over in some areas to provide basic shelter as Nepal’s monsoon season nears.
For the second time in three weeks, the Himalayan nation has been struck by a massive earthquake. Tuesday's 7.3-magnitude quake has killed at least 42.
In Kathmandu, nine out of 10 surviving school buildings are being used as emergency shelters.
The magnitude-7.8 earthquake, which hit Nepal on April 25, has claimed the lives of over 8,400 people.
More than 14,500 were injured by the magnitude-7.8 earthquake that struck Nepal on April 25. Eight million people have been affected by the disaster.
"To many, the dichotomy between what happened on Everest in the days after the quake and what hasn’t been happening everywhere else is striking."
Delivery of international aid may be impeded by the closure of the main airport's runway to large planes, which have damaged its surface since the earthquake.
Along with aircraft and other equipment, as many as 500 American troops are expected on the ground in Nepal in coming days.
Diseases are spreading in isolated areas of Nepal, where residents have been cut off by landslides.
Nepal's deep-seated menstrual taboos and a dearth of female sanitary products threatens to exacerbate health problems.
Supplies are being stacked at the country’s only international airport, instead of being delivered to victims of the earthquake.
A week after the earthquake, authorities are shifting their focus to providing relief supplies to survivors in remote areas.
The lack of government assistance has triggered anger among villagers outside Kathmandu as the death toll continues to rise.