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Mar 31, 2017 · Rocky Mountain spotted fever, a tick-borne zoonosis caused by Rickettsia rickettsii, is among the most lethal of all infectious diseases in the Americas. In Mexico, the disease was first described during the early 1940s by scientists who carefully documented specific environmental determinants responsible for devastating outbreaks in several communities in the states of Sinaloa, Sonora ...
Aug 20, 2023 · Mount San Gorgonio, also known as “Old Greyback,” is the highest peak in Southern California, towering at an elevation of 11,503 feet (3,506 meters). Another prominent peak is Mount San Jacinto, which stands at 10,834 feet (3,302 meters) and offers stunning panoramic views from its summit.
The California Gold Rush. On January 8, 1848, James W. Marshall, overseeing the construction of a sawmill at Sutter’s Mill in the territory of California, literally struck gold. His discovery of trace flecks of the precious metal in the soil at the bottom of the American River sparked a massive migration of settlers and miners into California ...
Rocky Mountain spotted fever was first recognized in 1896 in the Snake River Valley of Idaho and was originally called black measles. It was a dreaded and frequently fatal disease that affected hundreds of people in this area. By the early 1900s, the recognized geographic distribution of this disease grew to encompass parts of the United States ...
Type - Weeds. Human Product Number - 272. Veterinary Product Number - 272. Comments: This species, also known as bursage or burrobrush, is a very common low-growing, grayish-white shrub of the Mojave, Colorado, and Arizona Deserts, usually occurring below elevations of 3000 feet...
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Sep 15, 2022 · Rocky Mountain spotted fever (RMSF) is a life-threatening tick-borne disease documented in North, Central, and South America. In California, RMSF is rare; nonetheless, recent fatal cases highlight ecological cycles of the two genera of ticks, Dermacentor and Rhipicephalus, known to transmit the disease. These ticks occur in completely different ...
