In August of nineteen hundred, the researchers began to raise mosquitoes and infect them with the virus.

VOA: special.2010.05.18

In August of 1900, the researchers began to raise mosquitoes and infect them with the virus.

VOA: special.2009.01.27

"It reacts with that region, it inactivates the virus and the virus never has a chance to enter the cells that it would otherwise infect."

VOA: special.2010.07.14

America's Centers for Disease Control and Prevention says the disease will infect three hundred fifty million to five hundred million people around the world this year.

VOA: special.2010.04.20

These will continue to move around in the air and can infect people.

VOA: special.2009.07.14