It would also be helpful in areas like southern Africa, where people often do not show signs of the disease.

VOA: special.2010.04.20

Also,business plans often assume it will be easy to gain a share of a large or fast-growing market.

VOA: special.2009.06.26

They also often have limited access to health care and live in overcrowded homes, which make it easier for the virus to spread.

VOA: standard.2009.07.24