This book, a laboratory guide prepared for students with diligence, explains the various epidemiological methods in the measurement of disease occurrence, causal association and validation of the diagnostic tests and evaluation of vaccine efficacy etc. Further, it details the principle, methods and interpretation of various diagnostic techniques including microscopic demonstration of pathogens and immunological methods with suitable examples on common infectious diseases of bacterial, viral, rickettsial, chlamydial, fungal and parasitic origin in livestock and poultry in the field of...