HEALTH
REPORT - SARS Vaccine Moves Toward Testing
By Caty Weaver
This is Phoebe Zimmermman with the VOA Special
English Health Report.
Health officials say tests on people of a possible
vaccine(疫苗)to prevent SARS may begin early next year. SARS is
severe acute respiratory syndrome.
More than fifty SARS experts met this month in Geneva
at the headquarters of the World Health Organization. They came from
fifteen countries to discuss progress against the lung disease.
SARS began in southern China late last year. It spread
in Asia and other parts of the world. The W-H-O declared travel warnings.
Health officials worked aggressively. They kept SARS patients away from
others. They looked for anyone else those patients might have been near.
SARS was contained in the middle of this year. By
then, eight-thousand people had become sick. More than seven-hundred
of them died.
SARS causes effects similar to those of pneumonia
or influenza. People often cough. Breathing is difficult or painful.
Some people need machines to help them breathe. Body temperature goes
up. SARS can also make people feel tired, make their head hurt and make
them not want to eat. Most people with SARS, however, usually recover
within two weeks.
There will not be a vaccine in time if SARS returns
at the end of this year. But the experts at the meeting in Geneva praised
the progress made so far. They discussed work on experimental vaccines
against animal diseases caused by similar viruses.
SARS is caused by a coronavirus(冠状病毒).
Other members of this family of viruses cause diseases in animals as
well as the common cold in people.
The W-H-O said the first test of an experimental SARS
vaccine on humans could happen as early as January. It says the vaccine
should be ready in four to five years, unless there is a large outbreak
of SARS. In that event, it says the development process may be shortened
to two years.
Doctor Marie-Paule Kieny is director of the W-H-O
Initiative for Vaccine Research. She said the process to develop a SARS
vaccine more quickly than usual will be very complex. It will require
continued international cooperation. But, she said, safety and quality
must never be compromised.
Until there is a vaccine, the W-H-O says health officials
must be ready to use the existing control measures that work, in case
SARS reappears.
This VOA Special English Health Report was written
by Caty Weaver. This is Phoebe Zimmermann.
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