natural smallpox

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• Smallpox vaccine — The smallpox vaccine was the first successful vaccine ever to be developed. It was first perfected in 1796 by Edward Jenner who acted upon the observation that milkmaids who caught the cowpox virus did not catch smallpox. Before smallpox… …   Wikipedia

• Natural reservoir — or nidus, refers to the long term host of the pathogen of an infectious disease. It is often the case that hosts do not get the disease carried by the pathogen or it is carried as a subclinical infection and so asymptomatic and non lethal. Once… …   Wikipedia

• smallpox — /smawl poks /, n. Pathol. an acute, highly contagious, febrile disease, caused by the variola virus, and characterized by a pustular eruption that often leaves permanent pits or scars: eradicated worldwide by vaccination programs. [1510 20; SMALL …   Universalium

• Natural scientific research in Canada — This article outlines the history of natural scientific research in Canada, including mathematics, physics, astronomy, space science, geology, oceanography, chemistry, biology, medical research and psychology. The social sciences are not treated… …   Wikipedia

• List of natural disasters by death toll — A natural disaster is defined as a hazard which occurs naturally, that is a disaster that is not brought about by acts of human beings. A natural disaster might be caused by earthquakes, flooding, volcanic eruption, landslide, etc. In order to be …   Wikipedia

• John Gough (natural philosopher) — Infobox Scientist name = John Gough box width = 300px image width = caption = birth date = birth date|1757|01|15 birth place = Kendal, Westmorland, England death date = death date and age|1825|07|28|1757|01|15 death place = Kendal, Westmorland,… …   Wikipedia

• Timeline of natural disasters in the Azores — Here were the natural disasters that happened in the Azores Islands.1401 1500*Around 1432 first recorded famine in the Azores. *1439? 1444? Volcanic eruption on Sete Cidades, Miguel The eruption was not recorded especially the precise date for… …   Wikipedia

• 1977 — This article is about the year 1977. For other uses, see 1977 (disambiguation). Millennium: 2nd millennium Centuries: 19th century – 20th century – 21st century Decades: 1940s  1950s  1960s  – 1970s –   …   Wikipedia

• Christen Friis Rottbøll — (born March 3, 1727 at Hørbygård, Denmark died June 15, 1797 in Copenhagen) was a Danish physician and botanist and pupil of Carolus Linnaeus. He studied at the University of Copenhagen, first theology, then medicine, in which in took his… …   Wikipedia

• Cotton Mather — This article is about the 17th century Puritan minister. For the rock band, see Cotton Mather (band). Cotton Mather Cotton Mather, circa 1700 Born February 12, 1663(1663 02 12) …   Wikipedia

• Health and Disease — ▪ 2009 Introduction Food and Drug Safety.       In 2008 the contamination of infant formula and related dairy products with melamine in China led to widespread health problems in children, including urinary problems and possible renal tube… …   Universalium