3 climbers dead , 2 missing on Mount Everest

International trekkers pass through a glacier at the Mount Everest base camp in Nepal in February. A Nepal official says some 30 climbers have gotten frostbite or become sick on Mount Everest, in addition to three who died in recent days on the world's highest mountain.

KATHMANDU, Nepal — The dangers of scaling Mount Everest again have been made clear as three climbers have died over the past three days and two are missing, reports say.
According to CNN , Phurba Sherpa, 25, fell to his death on Thursday while working to fix a route just 150 meters from the summit. Eric Arnold, 36, of the Netherlands died Friday night of a suspected heart attack or altitude sickness. Arnold had reached the summit and was heading back down the mountain.
Maria Strydom, 34, of Australia, began suffering altitude sickness and died Saturday before she could be rescued. Strydom had reached camp IV, the final camp before the summit.
According to the Sydney Morning Herald , altitude sickness can occur when a person goes to extreme heights too quickly and oxygen fails to reach the body's tissues. Severe symptoms include coughing, breathlessness, irrational behavior, inability to walk straight or sit up, hallucinations and frothy, blood-tinged spit caused by lung damage.
The two missing climbers, Paresh Nath and Goutam Ghosh, were last seen Saturday near the summit, known as the "death zone," the Associated Press reports .
Nearly 400 climbers have reached the 29,035-foot summit since May 11 thanks to favorable weather.
But even with good weather, the mountain remains very dangerous. The BBC reports 30 climbers have suffered frostbite or become ill.
Climbing of Everest resumed this year after two years off because of a major earthquake in 2015 and an avalanche that killed 16 sherpas in 2014.
Thousands of people have reached the top of Everest since New Zealander Edmund Hillary and Sherpa Tenzing Norgay first did it in 1953, but more than 250 people have died trying.