FOX: The World Health Organization is likely to raise its alert for the H1N1 swine flu outbreak to the highest level and declare a pandemic, its director indicated in an interview published on Monday.

"Level six does not mean, in any way, that we are facing the end of the world. It is important to make this clear because (otherwise) when we announce level six it will cause an unnecessary panic," Reuters reported WHO Director General Margaret Chan told Spanish newspaper El Pais.

"Flu viruses are very unpredictable, very deceptive... We should not be overconfident. One must not give H1N1 the opportunity to mix with other viruses. That is why we are on alert," she reportedly told the newspaper.

Chan warned against over-confidence following a stabilization in the number of new cases of H1N1 because the southern hemisphere was about to enter winter, when flu cases naturally spike.

"We have to be very careful. No one can predict what is going to happen when countries in the south have flu peaks and this new one arrives -- which it is going to do, without a doubt."

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