Tuberculosis (TB) Tuberculosis (TB) Active tuberculosis (TB) is very contagious. The World Health Organization (WHO) estimates that one-third of the world's population is infected with the bacteria that cause TB.
With an average elevation of 6,800 feet, Colorado is the highest state in the United States. A mountain lake outside of the skiers dreamland of Aspen, Colorado. The US is bordered to the north by Canada and Mexico to the South. With 50 states of varied sizes, US is considered the largest nation in America.
Leadville, Colorado. Colorado has arcane legal distinctions between a town and a city (more than 2,00o residents qualify as the latter). Leadville, therefore, at 10,152 feet (according to the signs a the town limits) is the highest-elevationed city.. Alma is the highest town..