What is she thinking?.... Amid loud calls for the ouster of South Africa's Health Minister, Mrs. Manto Tshabalala-Msimang, that country's president, Thabo Mbeki, continues to support her. The Minister's advice for people with AIDS is to eat garlic and beetroot. International experts have condemned this "treatment" and the UN envoy, Stephen Lewis, describes it as an attitude of the "lunatic fringe". South Africa has one of the highest rates of HIV infection in the world. No wonder.