Some well-known communicable diseases include influenza, malaria, tuberculosis and hepatitis, according to the U.S. Department of Health and Human Services. Influenza, or the flu, is caused by a virus.
Types of flu include avian flu and swine flu, according to the Department of Health and Human Services. Avian flu is caused by the influenza A virus and is carried largely by birds. However, this type of flu is difficult to transmit to humans. Swine flu is also caused by the influenza A virus and attacks the respiratory systems of pigs. Sometimes, the virus infects humans. Once in a while, there is a flu pandemic in which a type of flu virus to which humans have no immunity spreads throughout the population.
Malaria is a disease caused by a parasite introduced into the body by a mosquito, according to the U.S. Centers for Disease Control and Prevention. People who have malaria experience shaking chills, fever and other symptoms that resemble the flu. Malaria is sometimes a fatal disease.
Tuberculosis is a lung disease caused by bacteria, according to the Mayo Clinic. It can be transmitted through the air from one person to another through coughing and sneezing. Hepatitis is a family of diseases that affect the liver, says MedlinePlus. The most common are hepatitis A, B and C.