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

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

VOA: special.2009.04.13

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

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