Infectious diseases are infectious diseases caused by microorganisms, such as viruses, bacteria, parasites, or fungi, and can move to other people who are healthy. Some infectious diseases that are common in Indonesia can be prevented through vaccination and clean and healthy lifestyle. Infectious diseases can be transmitted directly or indirectly. Direct transmission occurs when germs in sick people move through physical contact, for example through touching and kissing, through the air when sneezing and coughing, or through contact with bodily fluids such as urine and blood. People who transmit it may not show symptoms and do not look like a sick person, if he is only a carrier (carrier) of the disease. In addition to the above methods of transmission, infectious diseases can also spread through animal bites, or physical contact with animal body fluids, as well as through food and drink contaminated with disease-causing microorganisms. Infectious diseases can also move indirectl...