The W.H.O.has an influenza warning system in which phase six means that a pandemic is taking place.

VOA: special.2009.06.10

Diplomats and observers warn that this could be the deadliest phase of the war, as the army tries to target the rebels mixed in the civilian population.

VOA: standard.2009.04.06

"We're in the phase of cleaning up some stuff we can't see."

VOA: standard.2010.03.18

In contrast,a light bulb has much more impact in the use phase, where it's using the energy, and where you can reduce that with more efficient lighting technologies,"

VOA: standard.2009.03.30

The first phase of the Kyoto Protocol expires in 2012 and the current talks are aimed at setting in place new legally binding emissions targets for the decade to come.

VOA: standard.2009.11.04

"But if you look into the Mekong delta, for example in Vietnam, it has shown the 30-year cycle, but the phase and amplitude is going up and then going up like that."

VOA: standard.2009.12.21

"It is our intention to conclude this phase of our discussions in the very near future, within the timeframes that you suggest, to enable us to move on to the more important phase,".

VOA: standard.2009.09.14

At each stop, I have emphasized president Obama's message that our strategy working with you may be in a new phase, but we pledge our full and continuing commitment to Iraq and the Iraqi people.

VOA: standard.2009.04.25

Preliminary phase one tests of this new type of flu vaccine have already started in humans, but in an interview, Nabel said that even if all goes well, it will still be years before a universal flu vaccine is widely available.

VOA: standard.2010.07.21

The World Health Organization says it needs to see clear evidence of sustained community transmission of the swine flu virus from person-to-person in at least two regions of the world before it raises its alert to the phase six pandemic level.

VOA: standard.2009.05.14