This has led to greater use of monovalent vaccines to protect against either type one or type three polio.

VOA: special.2010.01.18

During this period, hair grows at a rate of about three tenths millimeters a day, or one centimeter a month.

VOA: special.2011.04.05

The World Health Organization this week declared the first pandemic, or worldwide spread, of influenza in forty-one years.

VOA: special.2009.06.13

And the charities are thinking they will raise only one or two percent more in two thousand ten than they did this year.

VOA: special.2009.11.02

Is this one person or two presidents who share the same name?

VOA: special.2009.07.24

And I think that was one of the things that made Nancy Drew special this was in the fifties or early sixties was that this girl survived by her wits and that was a new thing."

VOA: special.2009.08.24

It is hard to believe that many of us eat this much salt during one meal or even in one day.

VOA: standard.2010.04.22

And until BP finds a way to stem the flow, no one can estimate the full effect of this disaster on BP, its shareholders,or employees.

VOA: standard.2010.06.18

"The first time we visited this rock last fall - there were maybe one or two children out of 15 who knew how to climb up this."

VOA: standard.2010.06.25

As always in the World Cup, there can only be one winner and only time will tell whether this time round it's the octopus or the parakeet.

VOA: standard.2010.07.09

Angus Nicoll of the European Center for Disease Prevention says that at this point no one knows whether the virus will become more or less virulent in the months ahead.

VOA: standard.2009.04.30

"What I have learned is since no one asked investigators or people in charge there, they were not able to facilitate this because they were not asked to do so,"

VOA: standard.2009.05.25

"They are having an impact, whether domestically or internationally, and you have got to account for it, and this is one of those break points where you stop and assess how is the administration doing?

VOA: standard.2010.01.06

"So there's a big question mark,". "Who is responsible for such a heavy increase of production and export of the narcotics, because all of the areas where this cultivation is underway are controlled by NATO forces in one way or other?" Akhonzadeh said this reality cannot be ignored and called for new ideas,strategies and methods to tackle the problems of Afghanistan.

VOA: standard.2009.03.27