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[13] [14] [15] However, the World Wide Web Wanderer is intended only to measure the size of the web rather than to facilitate search. September: 2: First web search engine: W3Catalog, written by Oscar Nierstrasz at the University of Geneva, is released to the world. It is the world's first web search engine.
In the same year, 1898, Friedrich Loeffler (1852–1915) and Paul Frosch (1860–1928) passed the first animal virus through a similar filter and discovered the cause of foot-and-mouth disease. [ 5 ] The first human virus to be identified was the yellow fever virus . [ 6 ]
This is a list of the largest known epidemics and pandemics caused by an infectious disease in humans. Widespread non-communicable diseases such as cardiovascular disease and cancer are not included. An epidemic is the rapid spread of disease to a large number of people in a given population within a short period of time; in meningococcal ...
Rinderpest, which is caused by a virus closely related to measles virus, is a disease of cattle known since Roman times. [41] The disease, which originated in Asia, was first brought to Europe by the invading Huns in 370. Later invasions of Mongols, led by Genghis Khan and his army, started pandemics in Europe in 1222, 1233 and 1238.
A viral disease (or viral infection) occurs when an organism's body is invaded by pathogenic viruses, and infectious virus particles (virions) attach to and enter susceptible cells. [1] Examples are the common cold, gastroenteritis and pneumonia. [2]
Viral evolution is an important aspect of the epidemiology of viral diseases such as influenza (influenza virus), AIDS (HIV), and hepatitis (e.g. HCV). The rapidity of viral mutation also causes problems in the development of successful vaccines and antiviral drugs, as resistant mutations often appear within weeks or months after the beginning ...
Cross-platform open-source desktop search engine. Unmaintained since 2011-06-02 [9]. LGPL v2 [10] Terrier Search Engine: Linux, Mac OS X, Unix: Desktop search for Windows, Mac OS X (Tiger), Unix/Linux. MPL v1.1 [11] Tracker: Linux, Unix: Open-source desktop search tool for Unix/Linux GPL v2 [12] Tropes Zoom: Windows: Semantic Search Engine (no ...
Time period. Development. 1996–1997. Development of basic technology, launch of search engine, attachments like gmail and classroom come later. 2000. Internationalization: search is launched in 13 new languages. 2001–2004. Google launches many new search categories, such as Google News, Google Books, and Google Scholar. 2002 onward.