Introduction to Pertussis: Definition and Global Impact Whooping cough, medically referred to as pertussis, is a highly contagious respiratory infection caused by the bacterium Bordetella pertussis (B. pertussis). This gram-negative coccobacillus specifically targets the ciliated epithelial cells of the respiratory tract, leading to significant inflammation and the characteristic, debilitating cough. The name “whooping cough” derives […]
Introduction and Definition of the Antigen-Antibody Reaction The antigen-antibody reaction, often referred to as the immune complex formation, constitutes the fundamental defense mechanism of the adaptive immune system. It is a highly specific biochemical event involving the non-covalent binding of an antibody (immunoglobulin) to its corresponding antigen. This binding is not merely an attachment; it […]
Rabies: A Comprehensive Encyclopedia Entry The Core Definition of Rabies Rabies is an acute, progressive, and nearly always fatal zoonotic disease caused by the rabies virus (RABV). This highly pathogenic virus primarily affects the central nervous system (CNS) of mammals, including humans, leading to severe neurological symptoms if not promptly treated. The most common mode […]