We provide leadership and the evidence base for international action on surveillance, prevention, diagnosis, treatment and care of communicable diseases , noncommunicable diseases and mental health conditions. Communicable , or infectious diseases , are caused by microorganisms such as bacteria, viruses, parasites and fungi that can be spread, directly or indirectly, from one person to another. Some are transmitted through bites from insects while others are caused by ingesting contaminated food or water. Communicable diseases are illnesses caused by pathogens , which can spread from one person or animal to another. These diseases are typically transmitted through various means, such as direct contact, contaminated food or water, blood, or bodily fluids. Learn the definitions, examples, modes of transmission, prevention and mitigation measures of communicable and non- communicable diseases . Compare and contrast the major differences and integrated approaches to prevent them.
