Hong Kong, Chinese Experts to Test SARS Vaccine on Animals
HONG KONG (Reuters) May 27 - Scientists in Hong Kong and mainland China have
developed a vaccine for SARS that they will soon test on animals, a
microbiologist on the team said on Tuesday.
Laboratories worldwide have been racing to find a cure and a vaccine for
severe acute respiratory syndrome (SARS), which has affected more than 8200
people around the world, killing 729 of them, since it emerged in southern China
in November.
Guan Yi, an assistant professor of microbiology at the University of Hong
Kong, said the team will soon test the vaccine on monkeys.
"We cannot tell when the vaccine will be safe or effective in humans," he
told Reuters.
He also could not say how long the experiments would take.
Guan said scientists had cultured the SARS virus in their laboratories and
will kill, or inactivate, samples for the tests.
"We will then purify them to guarantee there is no live virus before testing
them on animals. We will then see if the cultured virus will stimulate the
production of antibodies," he added.
Experts have said it would take years before a SARS vaccine could be made
commercially available, if at all.
If the virus is mutating rapidly, as some scientists argue, a vaccine could
take a long time to develop, or might not be effective at all.
Scientists at the University of Hong Kong said last week that the SARS virus
may have jumped to humans from the civet cat, a delicacy for centuries for many
people in southern China.
Their tests showed that viruses found in the exotic animal were very similar
to the coronavirus found in SARS patients.
A World Health Organization official later warned that it was too early to
jump to firm conclusions that the civet cat was the definite reservoir for SARS.
But authorities in some parts of southern China have since renewed a
crackdown on the sale and consumption of wild game, and Hong Kong has banned the
import of civet cat meat.
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