It is not inevitable that an HIV positive mother will pass on the virus to her baby.
Access to advice and medical support before and after childbirth can protect babies from the virus that causes AIDS.
But not all mothers receive this support. Two-thirds of HIV positive pregnant women remain without access to services that can help prevent transmission to their children.
World Vision is asking the UK government to outline how it will contribute to the international target of providing 80% of mothers with access to prevention of transmission services by 2010.
Read Mary’s story and view a photo gallery to see how World Vision projects are supporting mothers who are HIV positive and helping to keep children healthy.