Search results
Pollen is a common allergen that causes significant health and financial impacts on up to a third of the population of the USA. Knowledge of the main pollen season can improve diagnosis and treatment of allergic diseases. Our objective in this study is to provide clear, quantitative visualizations of pollen data and make information accessible to many disciplines, in particular to allergy ...
Rocky Mountain spotted fever (RMSF) is a severe tick-borne rickettsial illness in the United States (1). RMSF is caused by Rickettsia rickettsii, is an intracellular bacterium and a member of the spotted fever group Rickettsia (SFGR). RMSF was first reported in the late 1890’s and is endemic to North, Central and South America.
Apr 6, 2010 · On January 24, 1848, James Wilson Marshall, a carpenter originally from New Jersey, found flakes of gold in the American River at the base of the Sierra Nevada Mountains near Coloma, California ...
In the great epidemic of 1878, 16,000–20,000 deaths from yellow fever occurred along the Mississippi River, from the Gulf of Mexico to Memphis, Tennessee, and St. Louis, Missouri ( 4 ). Overall, at least 100,000 deaths were attributed to yellow fever in the United States during 1693–1905 ( 4 ). Within a few years after the discovery in 1901 ...
History of smallpox. The history of smallpox extends into pre-history. [1] Genetic evidence suggests that the smallpox virus emerged 3,000 to 4,000 years ago. [2] Prior to that, similar ancestral viruses circulated, but possibly only in other mammals, and possibly with different symptoms.
Oregon Trail. The Oregon Trail was a 2,170-mile (3,490 km) [1] east–west, large-wheeled wagon route and emigrant trail in the United States that connected the Missouri River to valleys in Oregon Territory. The eastern part of the Oregon Trail spanned part of what is now the state of Kansas and nearly all of what are now the states of Nebraska ...
Politicians and other influential people who contributed to Oregon Fever and settlement spoke of America’s Manifest Destiny in their arguments for national expansion and the settlement of the West. The nationalist myth of the rugged frontier individual would serve as a potent symbol of American individualism in the West, but it materialized ...
