CHAUTARA, Nepal — Officials with bullhorns walked through the quake-damaged streets of this small Nepal town Wednesday, calling for people to leave buildings in danger of falling after the second major earthquake in less than three weeks.

The evacuation orders came a day after a magnitude-7.3 quake shook the impoverished Himalayan nation just beginning to rebuild from the devastating April 25 temblor. Tuesday’s earthquake killed at least 76 people, injured another 2,700 and caused landslides that blocked roads and slowed the delivery of relief supplies.

“There is danger!” the officials called out over the bullhorns. “Leave the buildings!”

Most people, though, had fled into the open the day before, and had spent the night in tents or under plastic tarps.