Across Asia, health officials have been re-enforcing old quarantine laws, shutting schools and imposing restrictions on travellers.

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Hundreds of guests and staff were under quarantine in China on Saturday after health officials determined that a hotel guest had contracted the H1N1 virus.

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Since the summer, masked health officials have screened the country's airports, hauling some 800 feverish-looking visitors off to quarantine on arrival.

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