The enormous spread of modern microbiology appears to be daunting for many young students pressed for time. This book is written to fulfill the need of a comprehensive, yet student-friendly text. The book fulfills requirements of syllabus for undergraduate medical students as per MCI recommendations covering the subject in four sections: General Microbiology, Immunology, Systemic Microbiology (which includes Bacteriology, Virology and Mycology), and Clinical & Applied Microbiology.