Oral sex: one needs to know that the AIDS virus is present in secretions, including the vaginal secretions of a woman and the semen (in both the pre-ejaculation lubricating mucus and the ejaculate, or "cum") of a man. This means that taking the partner's sexual secretions into the mouth can pose a risk of infection though the risk is not very high.
It is strongly advisable to carry out oral sex only with some kind of protection. One should use a condom on the erect penis, and place a thin rubber sheet or "dam" over the woman's genitals.
Anal Sex: AIDS virus more easily gets transmitted from an infected person to another person during anal sex than during vaginal sex.
In these circumstances, using a well-lubricated condom is absolutely essential for protection. Unlike the vagina, which produces secretions that lubricate vaginal sex, the anus does not produce lubricating secretions. Without such lubrication, the additional friction during anal sex can cause regular condoms to tear. In some places, it is possible to get condoms made especially for anal sex. If these are not available, one should really try to be on the safer side - look for other ways to have sexual satisfaction.