Transmission of Neurosyphilis from Person to Person. Neurosyphilis is considered infectious but is not transmitted from person to person. Generally, a disease like this is caused by an infectious agent and not spread between people.
On May 29, 1953, Edmund Hillary and Tenzing Norgay completed the first confirmed ascent of Mount Everest, which stands 29,035 feet above sea level.
1 1921: The first expedition to Everest was a reconnaissance to locate the best route up the mountain. 2  1922: George Mallory, Edward Norton and Howard Somervell became the first climbers to reach more than 8,000m.