Bhadra Sharma and Emily Schmall, The New York Times Published: 27 Jun 2021 11:51 AM BdST Updated: 27 Jun 2021 11:58 AM BdST Mount Everest, the world highest peak, and other peaks of the Himalayan range are seen through an aircraft window during a mountain flight from Kathmandu, Nepal January 15, 2020. REUTERS/Monika Deupala/File Photo In April at Mount Everest base camp, where climbers acclimatise to the extreme altitude before heading to the summit of the world’s highest peak, Jangbu Sherpa fell ill with a cough and fever. "); } At 17,590 feet, his symptoms quickly worsened. The expedition company that had hired Sherpa to help a Bahraini prince climb Everest had him airlifted to a hospital in the capital, Kathmandu, where he tested positive for COVID-19.