This study will evaluate two different management strategies for patients with advanced HIV infection who are at risk for recurrent and fluconazole-refractory oropharyngeal candidiasis. The treatment duration will be at least 24 months in order to evaluate the long-term effects of the treatment strategies on the development of fluconazole-refractory thrush. In addition to investigating antifungal treatment as it relates to fluconazole-refractory infections, the study will evaluate host factors and organism-related factors in order to increase our understanding of the pathogenesis of oropharyngeal candidiasis and fluconazole-refractory infections.