Tamiflu-resistant swine flu patient found in Japan: govtA genetic mutation Noun 1. genetic mutation - (genetics) any event that changes genetic structure; any alteration in the inherited nucleic acid sequence of the genotype of an organismchromosomal mutation, mutation of swine flu swine flu n. A highly contagious form of human influenza caused by a filterable virus identical or related to a virus formerly isolated from infected swine. that is resistant to the anti-viral Tamiflu has been discovered in Japan, the first such case in the country, the health ministry said. It was the second reported case of Tamiflu resistance linked to swine flu in less than a week. The latest case was found in a patient who had been given the drug since first being diagnosed with A(H1N1) around two weeks ago, Kyodo news Kyodo News (共同通信社 Kyōdō Tsūshinsha) is a nonprofit cooperative news agency based in Minato-ku, Tokyo. It was established in 1945 and it distributes news to almost all newspapers, and radio and television networks in Japan. agency reported Thursday, citing the Health, Welfare and Labour Ministry. The patient -- a woman in Osaka prefecture  This article or section needs copy editing for grammar, style, cohesion, tone and/or spelling.You can assist by [ editing it] now. -- was recovering after having been given Ralenza, an alternative anti-flu medication, the report said. A spokeswoman for Swiss pharmaceuticals giant Roche, which makes Tamiflu, said the company had been informed of the case and called it "normal." "It is absolutely normal," she said, adding that "0.4 percent of adults develop resistance" to Tamiflu. She said the case does not indicate Tamiflu has become less effective against swine flu. Danish authorities announced earlier this week they had discovered resistance to Tamiflu in a female patient. Ralenza was also used successfully to treat her. According to according to prep. 1. As stated or indicated by; on the authority of: according to historians. 2. In keeping with: according to instructions. 3. the latest World Health Organization figures, Japan has 1,266 reported cases of swine flu, but has so far recorded no fatalities. 
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