Infectious diseases are among the leading causes of death worldwide. Infectious disease specialists complement and strengthen therapeutic outcomes by providing the best care with proven benefits to the most ill patients in intensive care unit settings, including those who have underlying malignancy and/or immunocompromised disorders. The contents and topics in this book “Concise Handbook of Infectious Diseases” have been selected from leading infectious diseases journals and reputed international professional societies. This book is concise and summarizes diagnostic and therapeutic information, with key practical points for quick and high-quality reference. This book comprises of total 29 chapters. Beginning with an overview, the chapters provide in depth coverage of different types of infectious diseases, from mosquito and tick-borne conditions, human and animal bites, and mycobacterial infections, to viruses, parasites, tuberculosis, meningitis, and much more. Complete chapters are dedicated to hospital-acquired infections and infections in transplant recipients. The last chapter presents a brief discussion on principles and practice of vaccinology. This book has been written in a “teaching style”, focusing on the diagnostic and therapeutic guidance that is essential in day-to-day clinical practice. The contents of the book should be of interest to medical students, clinical trainees, and every medical specialist including clinical microbiologists and pharmacists.