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This Is A Detailed Essay About The New Emergence Of Sars. The History, The Physiology, The Symptoms, And The Treatment Are Discussed.

936 words - 4 pages

It was on a farm somewhere in southern China where the mystery pneumonia we know as SARS probably began. Once in the cities, the virus spread, thanks to air travel, is now a flaring epidemic in more than a dozen countries.SARS, which stands for Severe Acute Respiratory Syndrome, is the name of a potentially fatal new respiratory disease only recently recognized by scientists. It is not the name of the microorganism that causes the disease - this is suspected to be a virus, although exactly which one is still uncertain.Dr Carlo Urbani, an infectious disease specialist for the World Health Organization who directed public health programs in Cambodia, Laos and Vietnam, first identified the disease. Based in Hanoi, the 46-year-old Italian epidemiologist was called in after a visiting Chinese-American businessman, Johnny Cheng, became gravely ill and the disease mystified Vietnamese doctors.Urbani visited the man at the French Hospital in Hanoi on 26 February 2003 and, over the next week, took many samples. The disease looked like pneumonia - an acute disease marked by inflammation of the lungs and usually caused by bacteria, viruses or occasionally by chemical irritants. But the 48-year-old patient also had a high fever, cough, shortness of breath and other symptoms that suggested something else. Despite intensive care, Cheng eventually died - but not before he had infected 33 hospital staff and Urbani himself, who finally succumbed to the respiratory disease a month later. All of Vietnam's 62 cases can be traced to the businessman, who had arrived from Hong Kong only three days before being admitted to the hospital.Soon, other cases emerged in Hong Kong, and World Health Organization (WHO) officials began to suspect the disease might be linked to sporadic reports from the Guangdong province of southern China in early February that hundreds of people were falling ill with a strange form of pneumonia. It turned out they were right: an outbreak had begun there in November 2002, and had now spread to Hong Kong. It was in the former British colony that the worldwide outbreak really got its wings: thanks to the international nature of this bustling Asian city, and its role as a trade and transport hub for Asia, the putative disease had soon spread to 19 countries. As of 10 April 2003, there were 2,781 known cases and 111 deaths from the new disease.On March 19, German and Hong Kong scientists isolated in infected patients a completely new virus from the Paramixoviridae family - known to cause mumps and measles - which they blamed for the disease. Hailing from a sub-group known as a metapneumoviruses, the bug was also found in the respiratory tract of patients in Canada - home to the fourth largest number of cases. Metapneumoviruses were themselves very new, having only...

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