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    The number of SFR cases has risen in the last two decades, from 495 cases in 2000, to a peak of 6,248 in 2017. However, cases reported in 2018 were slightly lower.
    Because of the inability to differentiate between spotted fever group Rickettsia species using commonly available serologic tests, it is unclear how many of those cases are RMSF, and how many resul...
    The number of SFR cases reported to CDC per year have generally increased over time with distinct increases since the mid-1990s.
    Notably, while the number of cases and incidence rose, the case fatality rate (i.e., the proportion of SFR patients that died as a result of infection) has declined since the 1940s when tetracyclin...
    The current case fatality rate for SFRs using surveillance data is still roughly 0.5% of cases.
    Although SFR cases can occur during any month of the year, most cases reported illness in May–August.
    This period coincides with the season when adult Dermacentorticks are most active.
    Seasonal trends may vary depending on the area of the country and tick species involved.
    SFR cases have been reported throughout the contiguous United States, although five states (Arkansas, Missouri, North Carolina, Tennessee, and Virginia) account for over 50% of SFR cases.
    In Arizona, RMSF cases have recently been identified in an area where the disease had not been previously seen. From 2003 to 2018, nearly 430 cases were reported with a case-fatality rate of about 5%.
    SFR cases are more frequently reported in men than in women.
    People over the age of 40 years account for the highest number of reported cases, however, children under 10 years old represent the highest number of reported deaths.
    Persons with glucose-6-phosphate dehydrogenase (G6PD) deficiency.
    Surveillance data shows higher risk for hospitalization in people with compromised immune systems (e.g., resulting from cancer treatments, advanced HIV infection, prior organ transplants, or some m...
  1. Dengue Around the World | Dengue | CDC

    www.cdc.gov/.../areaswithrisk/around-the-world.html

    Dengue outbreaks are occurring in many countries of the world in the Americas, Africa, the Middle East, Asia, and the Pacific Islands. Anyone who lives in or travels to an area with risk of dengue is at risk for infection.

  2. Rocky Mountain spotted fever - Wikipedia

    en.wikipedia.org/wiki/Rocky_Mountain_spotted_fever

    Rocky Mountain spotted fever (RMSF) is a bacterial disease spread by ticks. It typically begins with a fever and headache , which is followed a few days later with the development of a rash . [3] The rash is generally made up of small spots of bleeding and starts on the wrists and ankles. [10]

    • 2 to 14 days after infection
    • Early: Fever, headache, Later: Rash
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  4. NOVA Online | Bioterror | Global Guide to Bioweapons (non-Flash)

    www.pbs.org/wgbh/nova/bioterror/glob_nf.html

    Back to World map China. ... Anthrax, cholera, plague, smallpox, botulinum toxin, hemorrhagic fever, typhoid, yellow fever Back to World map ... History of Biowarfare ...

  5. 15 Amazing Historic Locations In China That You Shouldn't Miss

    www.tripsavvy.com/historic-locations-in-china...

    A guide to some of the most interesting historic sites in China that everyone should be sure to visit during a trip to China. The range of historic locations date from one or two hundred years old through to some that are several thousand years old.

  6. Map | Story of China | PBS

    www.pbs.org/story-china/map

    China by Dynasty. China’s boundaries have expanded and contracted over time. The six maps show China at selected periods in history. Click on each map heading to see the extent of China’s ...

  7. China Map and Satellite Image - Geology

    geology.com/world/china-satellite-image.shtml

    China on a World Wall Map: China is one of nearly 200 countries illustrated on our Blue Ocean Laminated Map of the World. This map shows a combination of political and physical features. It includes country boundaries, major cities, major mountains in shaded relief, ocean depth in blue color gradient, along with many other features.

  8. World History Maps & Timelines. Kingdoms, Battles, Expeditions. Comparative History, Political, Military, Art, Science, Literature, Religion, Philosophy.

  9. China: Timeline - HISTORY

    www.history.com/topics/china/china-timeline

    Mar 22, 2019 · It’s hard to say how old Chinese culture actually is, but it’s one of the oldest that still has a presence in the modern world. Legends claim that the earliest rulers in China were the Xia ...

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