This course for dental students is designed to provide and facilitate the learning in which students can make acquaintance, both in theoretical and practical contexts, with microorganisms as agents of human disease with relevance to dentistry. The major topics covered in this course will include: fundamentals of immunology and host-parasite relationships, bacteria and human diseases caused by them, viruses and human diseases caused by them, fungi and human diseases caused by Candida albicans and an introduction to oral microbiology.