Erysipelas (Greek ερυσίπελας - red skin) is an acute streptococcus bacterial infection of the dermis, resulting in inflammation and characteristically extending into underlying fat tissue. This disease is also known as Saint Anthony's...
Red plague can refer to the corrosion of silver-plated copper.
vibriosis, a systemic bacterial infection of marine and estuarine fishes, caused by the Vibrio genus. Also known as red pest, red boil, or saltwater furunculosis.