New research shows that it is ineffective to use sulfa drugs (including sulfapyridine and ethylamine) for preventing toxoplasma infection. 15 percent AIDS have toxoplasma.

新研究发现，采胺类药物包括（胺嘧啶和乙胺嘧啶及SMZco）预防弓形虫感染是无效。15%AIDS患者合并有弓形虫。