While the threat of a bird flu pandemic continues to hang over the world, authorities in the United Kingdom now believe a second strain of avian flu -- previously considered of little human risk -- does indeed pose a real danger to people.

"When you have to hospitalize someone for respiratory illness in the U.K., where hospital beds are hard to allocate, then the person has a serious illness," said Jonathan Nguyen-Van-Tam, a senior lecturer at Public Health Laboratory Services in London.

"In this outbreak, we had four people who tested positive for H7 influenza strain, and three of them were hospitalized," he told United Press International. "One person was a candidate for intensive care before he finally came around.

"I think we need to reconsider the H7 strain on the basis of this outbreak," Nguyen-Van-Tam said in reporting how British authorities dealt with the disease encountered on small farms in Wales in the spring of this year.

 Source : Science Daily