| | Conditions & Treatments | Infectious Diseases What is the root word of malaria? The root word of malaria is 'mal' and 'aria'. 'Mal' is derived from the latin word 'malus' means bad or harmful. 'Aria' is derived from the latin word 'aër' means air. Infectious Diseases - Related Articles What tempurture is a fever? What do rotavirus infections cause? How does blood infected with bacteria differ from healthy blood? Are communicable diseases most contagious in the later stages? Signs of MRSA & Urinary Tract Infection Policies of an NTP Medical Technologist Symptoms of a Beef Tapeworm