The deadly SARS virus could return later this year, according to some experts. However, they have suggested it is unlikely to be on the scale of an epidemic.

The World Health Organization declared that the SARS outbreak had come to an end earlier this month. The highly contagious virus had spread across the globe killing over 800 people and infecting over 8,000 since it first emerged late last year. However, scientists have always insisted that it could reappear again particularly during the flu season, which starts in autumn.

Editors at the Journal of Epidemiology and Community Health asked nine international experts for their views.

Two said they did not believe the virus would reappear. Four said they were uncertain and three predicted it would. However, they all agreed that public health officials must not let their guard down.

They said one of the risk factors was that the source of SARS is still not known.

It has been suggested that the virus crossed the species barrier from animals to humans. Some scientists believe the source may be civet cats and "racoon dogs" in China.

The international experts said effective isolation procedures would be the best way of stopping the virus from taking hold.
The first known case of SARS was discovered in Guangdong province, in China, last November. By February, the Chinese Ministry of Health had reported 300 cases including five deaths in Guangdong province. The virus went on to claim more than 600 lives in China and Hong Kong and a further 200 lives in countries as far apart as Canada, South Africa and Singapore.

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