被感染了豬流感的豬有何癥狀？中英文對照閱讀

　　How does swine flu spread among pigs?

　　Swine flu viruses are thought to be spread mostly through close contact among pigs and possibly from contaminated objects moving between infected and uninfected pigs. Herds with continuous swine flu infections and herds that are vaccinated against swine flu may have sporadic disease, or may show only mild or no symptoms of infection.

　　豬流感在豬群中如何傳播？

　　豬流感病毒被認為通過豬之間的近距離接觸進行傳播，另一種可能的傳播方式是攜帶病毒的物體將病毒從被感染的豬群傳播到健康的豬群中。被連續(xù)感染豬流感的豬，以及已注射抗流感疫苗的豬會零星地發(fā)生流感，或者只出現(xiàn)輕微的感染癥狀，或者會不出現(xiàn)感染。

　　What are signs of swine flu in pigs?

　　Signs of swine flu in pigs can include sudden onset of fever, depression, coughing (barking), discharge from the nose or eyes, sneezing, breathing difficulties, eye redness or inflammation, and going off feed.

　　被感染了豬流感的豬有何癥狀？

　　癥狀包括突發(fā)的發(fā)燒，抑郁，咳嗽(吠叫)，鼻子或者眼睛產(chǎn)生排泄物，打噴嚏，呼吸困難，眼紅或者眼腫，以及厭食。

　　How common is swine flu among pigs?

　　H1N1 and H3N2 swine flu viruses are endemic among pig populations in the United States and something that the industry deals with routinely. Outbreaks among pigs normally occur in colder weather months (late fall and winter) and sometimes with the introduction of new pigs into susceptible herds. Studies have shown that the swine flu H1N1 is common throughout pig populations worldwide, with 25 percent of animals showing antibody evidence of infection. In the U.S. studies have shown that 30 percent of the pig population has antibody evidence of having had H1N1 infection. More specifically, 51 percent of pigs in the north-central U.S. have been shown to have antibody evidence of infection with swine H1N1. Human infections with swine flu H1N1 viruses are rare. There is currently no way to differentiate antibody produced in response to flu vaccination in pigs from antibody made in response to pig infections with swine H1N1 influenza.

　　While H1N1 swine viruses have been known to circulate among pig populations since at least 1930, H3N2 influenza viruses did not begin circulating among US pigs until 1998. The H3N2 viruses initially were introduced into the pig population from humans. The current swine flu H3N2 viruses are closely related to human H3N2 viruses.

　　豬流感在豬群中經(jīng)常發(fā)生嗎？

　　H1N1和H3N2豬流感病毒在美國是地區(qū)性發(fā)作的，這也是養(yǎng)豬業(yè)經(jīng)常要面對的問題。流感通常在天氣寒冷的月份爆發(fā)（深秋以及冬季），并且會從豬傳播到其他易感染的牲畜當中。研究表明H1N1豬流感在全世界豬群中都比較普遍，并且抗體證據(jù)表明有25%的動物被感染過。在美國，有30%的豬被檢測出抗體，表明它們被H1N1感染過，而在美國中北部，這個比例是51%。人類感染H1N1豬流感病毒的病例很少見。比較接種豬流感疫苗而產(chǎn)生的抗體與豬抵抗H1N1病毒而產(chǎn)生的抗體，兩者到目前為止并沒有發(fā)現(xiàn)不同之處。

　　H1N1豬流感病毒早在1930年就被發(fā)現(xiàn)在豬群中傳播，而H3N2流感病毒則直到1998年才發(fā)現(xiàn)在美國傳播開來。H3N2病毒一開始是從人身上傳染到豬的，現(xiàn)在的H3N2豬流感病毒與H3N2人流感病毒有著很近的相關性。

　　Is there a vaccine for swine flu?

　　Vaccines are available to be given to pigs to prevent swine influenza. There is no vaccine to protect humans from swine flu. The seasonal influenza vaccine will likely help provide partial protection against swine H3N2, but not swine H1N1 viruses.

　　豬流感有疫苗嗎？

　　豬流感疫苗被用于防止豬流感在豬群中傳播，但目前沒有疫苗來防止豬流感在人群中傳播。對人來說，季節(jié)性流感疫苗很可能只能提供部分的保護免受H3N2豬流感病毒，但對于H1N1豬流感病毒，該疫苗沒有保護作用。