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Tuesday, April 10, 1973
These measures are also being adopted for persons arriving by sea.
Dr. Choa said a valid certificate against smallpox had always been
a requirement for travellers arriving in Hong Kong, but in March, for example,
467 passengers had disembarked without such a certificate.
They were vaccinated at Kai Tak, or their ship, and allowed entry
into Hong Kong, but the immunity so provided was not guaranteed since it took
two weeks, in some cases, for the vaccination to be effective.
The surveillance will help us to make certain that nothing goes
wrong," Dr. Choa explained.
A third measure in the current effort to safeguard Hong Kong against
smallpox will take effect from Tuesday, April 16, when passengers arriving
without valid certificates will also be required to deposit a bond of up to
$400 with the Port Health authorities, in addition to being placed under
surveillance.
"The bond is intended to see that the passengers concerned co-operate
fully with the authorities during the period of their medical surveillance,
Dr. Choa said.
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