The 3rd European Congress on Infectious Diseases & Immunology, taking place on August 11–12, 2027, in London, UK, is a premier international platform dedicated to advancing infectious disease research, clinical infectious medicine, immunology, microbiology, diagnostics, therapeutics, prevention, and global health. The congress will bring together infectious disease specialists, immunologists, microbiologists, virologists, epidemiologists, clinicians, researchers, healthcare professionals, academicians, pharmaceutical and biotechnology experts, vaccine developers, public health professionals, and medical technology innovators to exchange knowledge, present research, discuss emerging challenges, and explore advances in infection and immune science.