Taiwan has waiting children with HIV registered for international adoption. World Association for Children & Parents (WACAP) is placing children with HIV from Taiwan.
According to Adoption.State.gov and the placing agencies:
Age requirements: One parent must be at least 20 years older than the orphaned child and the other must be 16 years older. (Generally aged 25/30 minimum to 50/55 maximum to adopt children with HIV).
Marriage requirements: Prefer couples who have been married at least 2-5 years (depending which agency you talk to). Single applicants are not currently being accepted.
Travel: At least one parent must travel to Taiwan for 4-6 business days.
Other adoption agencies which place children from Taiwan and have placed HIV+ children (from other countries) include: Children’s Home Society and Family Services (CHSFS), Bethany Christian Services, and Wide Horizons for Children and possibly Children’s House International (which was advocating for a sibling group of 3 in October 2010).