Evolution of Infectious Disease infectious disease can be induced by bacteria, viruses, fungi, and parasites. Several examples of infectious diseases are as follows: tuberculosis, chickenpox, mumps, meningitis, measles, and malaria. Infectious diseases can be obtained through many routes of transmission such as inhalation, open wounds, sores, ingestion, sexual intercourse, and insect bites. Author, Paul Ewald used his book to expound upon infectious diseases in humans and animals, explain various routes of transmission as well as epidemiology as a whole. Epidemiology is defined as the study of the onset, distribution, and control of diseases. Evolutionary epidemiology focuses on the distribution of infectious diseases whereas Darwinian
Chicken anaemia virus age following horizontal transmission of the virus via the oro-faecal route - is ubiquitous. The virus is very resistant in the environment, making elimination very difficult. The disease/virus has many names including chicken anaemia, blue wing disease, anaemia dermatitis syndrome, chicken/avian infectious anaemia, haemorrhagic aplastic anaemia syndrome, infectious chicken anaemia, chicken infectious anaemia virus and chicken anaemia agent. When this virus was first discovered in 1979, it was named "chicken anemia agent". Clinical signs only occur in chicks less than three weeks of age. During outbreaks of CAV, up to 10% of chicks can die. Signs include a pale comb,