ANTC68H3 Lecture Notes - Lecture 10: Epidemiological Transition, Opportunism, Malnutrition
Document Summary
Omran"s epidemiological transition: the age of pestilence & famine. Life expectancy between 20 and 40: age of receding pandemics, pandemics and marked peaks. Life expectancy about 30 to 50: age of degenerative diseases. Problems include: sewage, water supply, pollution, housing shortage, transportation, food. Benefits of urban living: year around employment, access to medical facilities. Opportunism & diseases: often impossible to identify one sole factor as cause of death, example: individual sick with infectious disease (measles) more likely to be malnourished greater risk of getting another disease. Infection can be: overt - causing a recognizable disease, silent - individual is asymptomatic or has sub-clinical disease. Infected individuals who can pass the infection on to others are considered. Infectious can include carriers" - infected but show no signs of disease. Three types of infection: acute infection = short-lived, chronic infection = long-standing condition; person may persistently infectious, latent infection = persistent infection which can recur.
