WHO on verge of declaring H1N1 flu pandemic

By Stephanie Nebehay

GENEVA (Reuters) - The World Health Organization (WHO) is on the verge of declaring the first influenza pandemic in more than 40 years, but wants to ensure countries are well prepared to prevent a panic, its top flu expert said on Tuesday.

Keiji Fukuda, acting WHO assistant director-general, voiced concern at the sustained spread of the new H1N1 strain -- including more than 1,000 cases in Australia -- following major outbreaks in North America, where it emerged in April.

Confirmed community spread in a second region beyond North America would trigger moving to phase 6 -- signifying a full-blown pandemic -- from the current phase 5 on the WHO's 6-level pandemic alert scale.

"The situation has really evolved a lot over the past several days. We are getting really very close to knowing that we are in a pandemic situation, or I think, declaring that we are in a pandemic situation," Fukuda told a teleconference.

Fukuda said a move to phase 6 would reflect the geographic spread of the new disease.

"It does not mean that the severity of the situation has increased or that people are getting seriously sick at higher numbers or higher rates than they are right now," he said.

A decision to declare a pandemic involved more than simply making an announcement, he said. The United Nations agency had to ensure that countries were able to deal with the new situation and also handle any public reaction.

"One of the critical issues is that we do not want people to 'over-panic' if they hear that we are in a pandemic situation. That they understand, for example, that the current assessment of the situation is that this is a moderate level," Fukuda said.