Restaurant and hotel owners, as well as the Association of Indonesian Tours and Travel Agencies, told Reuters that tour cancellations had surged in what is usually one of the busiest months of the year.
The Red Cross previously said aid was struggling to reach the northern parts of the island due to debris from the quake and the ongoing risk of landslides.
Speaking to The Washington Post by phone en route to a badly-damaged village, he said nearly 80 percent of the buildings and structures, including homes, schools and community facilities, have been destroyed in that area.
"Evacuees and people ran out of houses when they felt the strong shake of the 6.2 magnitude quake".
Almost 1,500 people have been hospitalized with serious injuries and more than 156,000 displaced, Nugroho told AFP.
The strong aftershock, measured at magnitude 5.9 by the U.S. Geological Survey, caused panic and damage.
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Nguroho said in statement that the death toll will continue to rise because rescue workers are still finding victims in the ruins of collapsed buildings and some people who are already buried are not yet included in the official toll.
Several bridges have been destroyed and landslides have hit, making aid support from both the government and global nongovernmental organizations very challenging.
Indonesia is prone to earthquakes as it is situated in the "Ring of Fire", an area in the basin of the Pacific Ocean where many tremors and volcanic eruptions occur.
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One aid agency, Yayasan Plan International Indonesia, has warned that thousands of children have been left homeless, forced to sleep in open fields without warm clothing or blankets. At least two dozen people were injured, including 17 who were still being treated Friday at West Nusatenggara Provincial General Hospital in Mataram.
The number forced from their homes in the disaster has soared to 270,000, national disaster agency spokesman Sutopo Purwo Nugroho said, with around 1,000 people severely injured.
'People are always saying they need water and tarps, ' he said, adding they were also looking for people with untreated injuries. "Our hearts go out to the people affected by the natural disaster".
Some 4,600 tourists have been evacuated from the Gili Islands, three tiny, coral-fringed tropical islands off the northwest coast of Lombok which are popular with backpackers and divers.