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swine flu就是最近頗受關(guān)注的“豬流感”，全稱為swine influenza，定義為a respiratory disease of pigs caused by type A influenza viruses that causes regular outbreaks in pigs（一種由A類流感病毒引起并在豬中間傳播的呼吸系統(tǒng)疾?。祟惒《疽话悴粫鹘o人類。但是據(jù)專業(yè)部門研究表示，此次發(fā)生在墨西哥的H1N1類豬流感病毒具傳染性，而且還會在人類中傳播。

人類感染豬流感表現(xiàn)出的癥狀與普通流感癥狀相似，如發(fā)燒、咳嗽、咽喉腫痛、身體疼痛、頭痛、發(fā)冷及易疲勞等。還有人感染豬流感病毒后表現(xiàn)出腹瀉及嘔吐的癥狀。

至今，影響到人類的動物類流感有bird flu（禽流感）和swine flu（豬流感），普通的human flu（人類流感）還會因季節(jié)的變化而出現(xiàn)seasonal flu（季節(jié)性流感）。這些flu雖然癥狀相似，但是傳染度和嚴重程度卻大不相同，需要引起人們足夠的重視。

China has suspended flights from Mexico in the wake of the outbreak of H1N1, otherwise known as swine flu. Hong Kong authorities confirmed a Mexican man who traveled through Shanghai had the virus. Local governments are tracking down his fellow passengers to quarantine them.

Flu prevention measures are being introduced across Asia. In Myanmar, thermal sensor cameras have been set up at the airport, and health staff are conducting temperature checks on arriving passengers.

There have been sporadic outbreaks across the continent. South Korea has confirmed its first case, a Health Ministry official said on Saturday. The sufferer was a 51-year-old woman who recently returned from Mexico. In New Delhi, three passengers have been quarantined in hospital for symptoms of swine flu infection.

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The World Health Organization said although the virus had reached Asia, the spread had so far been limited. Peter Cordingley is the WHO spokesman for the Western Pacific Region.

"A pandemic seems to be imminent, and governments have to get ready for it. And when we say getting ready for it, we mean looking after the health of their citizens. I don't think there are many ways they can stop it coming in. If you look at what happened with this traveler from Mexico to Hong Kong, he walked through health checkpoints in Shanghai and in Hong Kong, and was not spotted."

So far at least 15 countries have reported 615 infections with H1N1. However, new laboratory data showed fewer people have died from the virus in Mexico than first thought. It's a glint of good news for a world rattled by the threat of a flu pandemic.