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Smallpox was the first widespread disease to be eliminated by human interven
Smallpox was the first widespread disease to be eliminated by human interven
游客
2023-12-27
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问题
Smallpox was the first widespread disease to be eliminated by human intervention. A highly contagious viral disease, it was endemic in Europe, causing the death of millions of people until the development of vaccination by Edward Jenner around 1800. In many non-European nations, it remained a dreaded, often fatal illness until very recently.
In May 1966, the World Health Organization (WHO), an agency of the United Nations, was authorized to initiate a global campaign to eradicate smallpox. The goal was to eliminate the disease in one decade. At the time, the disease posed a serious
threat
to people in thirty nations. More than 700 physicians, nurses, scientists, and other personnel from WHO joined about 200,000 health workers in the infected nations to battle the disease. Because similar projects for malaria and yellow fever had failed, few believed that smallpox could actually be eradicated, but eleven years after the initial organization of the campaign, no cases were reported in the field.
The strategy was not only to provide mass vaccinations but also to isolate patients with active smallpox in order to
contain
the spread of the disease and to break the chain of human transmission. Rewards for reporting smallpox assisted in motivating the public to aid health workers. One by one, each smallpox victim was sought out, removed from contact with others and treated. At the same time, the entire village where the victim had lived was vaccinated.
By April 1978, WHO officials announced that
they
had
isolated
the last known case of the disease, but health workers continued to search for new cases for two additional years to be completely sure. In May 1980, a formal statement was made to the global community. Today smallpox is no longer a threat to humanity. Routine vaccinations have been stopped worldwide. [br] Which of the following statements does NOT refer to smallpox?
选项
A、Previous projects had failed.
B、People are no longer vaccinated for it.
C、The World Health Organization mounted a worldwide campaign to eradicate the disease.
D、It was a serious threat.
答案
A
解析
是非题型选项B的内容在第四段最后一句有提及;选项c的内容在第二段最后一句有提及;选项D的内容在第一段第二句有提及;选项A的内容在第二段最后一句有提及,但讲的是以前对疟疾和黄热病开展的类似项目都失败了,而不是以前曾开展过根除天花的项目;因此A为答案。
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