The World Health Organisation launched a worldwide appeal for the countries to brace themselves for the second swine flu wave. This bug already killed 1,800 people, according to the World Health Organisation.

"We cannot say for certain whether the worst is over or the worst is yet to come", WHO manager Margaret Chan warned, quoted by AFP. "We need to be prepared for whatever surprises this capricious new virus delivers next", she underlined. Chan said authorities should be prepared for a second, even a third swine flu wave, judging by past pandemics.

The Northern countries are most vulnerable during the autumn season, while the epidemic is beginning to drop in temperate climate regions from the South hemisphere, according to specialists. This is where the shock wave was virulent, the A(H1N1) virus spread extremely rapidly, WHO admits.

Since its March outbreak, the new flu spread to 177 states, causing 1,799 deaths and contaminating over 182,000 people, according to a survey considered much under under-estimated by the World Health Organisation. The WHO specialists claim that this is only the beginning. On June 11, they declared that this was the first pandemic of the 21st century.