The vaccine has already proven effective at preventing the disease in half of those vaccinated which is more than ever before.

VOA: special.2009.12.22

Some economists think the plan needs to provide as much as one trillion dollars or more to be effective.

VOA: special.2009.01.09

In the United States, the Armed Forces Radiobiology Research Institute is looking for more-effective treatments for radiation exposure.

VOA: special.2011.03.30

Carol Pandak says tests found the new vaccine to be thirty percent more effective than the trivalent vaccine.

VOA: special.2010.01.18

It is also more effective and less costly than the drugs traditionally used.

VOA: special.2010.01.04

Based on the results, researchers advised doctors and parents to warn young women about the risk of wrinkles as a more effective way to prevent tanning bed use.

VOA: special.2010.07.06

NATO commanders plan to reduce his influence as the chairman of the provincial council by making the local government more effective.

VOA: standard.2010.05.28

President Obama says he is scrapping the Bush administration's proposal, and replacing it with a plan that is more flexible and effective.

VOA: standard.2009.09.17

He also said a more responsive and effective Afghan government would help dispel doubt in the international community and inspire more assistance.

VOA: standard.2009.10.23

The California Democrat wants the federal agencies involved in off-shore drilling to be more effective.

VOA: standard.2010.05.18

Secretary Napolitano, a former governor and attorney general in the southwestern border state of Arizona, says prosecuting drug criminals is a more effective strategy than building border walls.

VOA: standard.2009.03.24

"I am sure that the cooperation between the countries in the field of strategic security is more effective for both Russia and the United States than any AMD , any armed forces or any military operation."

VOA: standard.2009.09.17

She said the Obama administration intends to devote hundreds more agents and more effective equipment to stem gun-running across the border and curb illegal purchases in U.S.gun shops by so-called "straw men" fronting for Mexican criminals.

VOA: standard.2009.03.25

Luciani says UNICEF is working closely with a number of youth groups in Guinea Bissau because those organizations are often more effective at getting the message out to young people who might ignore more traditional public health campaigns.

VOA: standard.2009.04.24