Phase five is marked by human-to-human spread of the virus into at least two countries in the same area of the world.

VOA: special.2009.05.06

People around the world can prevent diseases spread by mosquitoes by removing standing water from their property.

VOA: special.2009.04.13

The H1N1 flu virus that has spread around the world is especially risky for pregnant women.

VOA: special.2009.08.05

Their work could give infected mothers in the developing world a new way to prevent the spread of the AIDS virus to their newborn babies.

VOA: special.2010.05.24

Irving Berlin's music helped spread that popular culture throughout the world.

VOA: special.2009.12.20

Trade exchanges spread ceramics all over the world.

VOA: special.2009.09.09

Toscanini's comment spread throughout the world of music.

VOA: special.2009.01.25

"By going to phase six, what this would mean is that the spread of the virus is continued and that activity has become established in at least two regions of the world.

VOA: special.2009.06.10

The World Health Organization reports H1N1 has spread to more than 200 countries, with nearly 12,000 laboratory confirmed deaths.

VOA: standard.2009.12.29

Governments around the world are urging their citizens to avoid traveling to areas infected with swine flu,to minimize its spread.

VOA: standard.2009.04.28

"We are working with our partners to stop the spread of nuclear weapons and to seek a world free of nuclear weapons.

VOA: standard.2010.02.06

In Washington, President Barack Obama said the resolution sends an "unmistakable message" about the world's commitment to stopping the spread of nuclear weapons.

VOA: standard.2010.06.09

Dr.Margaret Chan,Director General of the World Health Organization, began a series of daily briefings to track H1N1 as it spread around the globe.

VOA: standard.2009.12.25

World Health Organization Director-General Margaret Chan said the alert level was stepped up because influenza viruses are unpredictable and can spread quickly around the world.

VOA: standard.2009.04.29

Last year at this time, governments around the world intensified efforts to contain a deadly flu virus that killed scores of people in Mexico and quickly spread around the world.

VOA: standard.2010.04.29

The H1N1 virus, which is commonly known as swine flu, has spread rapidly around the world since emerging in North America earlier this year, yet still much of what makes it so potent a threat remains a mystery.

VOA: standard.2009.08.25

We have a big job on our hands,". Borlaug expressed concern about a new variety of wheat stem rust attacking wheat plants in Africa and advocated greater coordination of researchers around the world to stop its spread.

VOA: standard.2009.09.13