Infectious disease Intro
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Difference between infectious and non infectious
Infectious: A disease caused by an infectious agent. The agent is external to the body. Eg. Munching on ham and getting tapeworms giving u taeniasis Non-Infectious: A disease caused by an internal imbalance within the body. Eg. Genetic conditions, Cancer, Heart disease.
Contagious vs infectious
Contagious -> infectious disease that can be passed to others *All contagious disease are infectious disease
What is a pathogen
An infectious agent that can cause disease
How are pathogens transmitted
• Airborne - dissolved in droplets or attached to dust particles • Vector-borne, transferred by a living thing • Contact - either directly or indirectly through vehicles (non living objects)
What does R no. represent for infectious diseases
The number of people that one infected person will [ass on a virus to on average. When the R value is less than 1 the disease will slow down.
Epidemic vs pandemic
Epi - Local smaller area affected by an outbreak of infectious disease Pan - wide spread / world wide outbreak of infectious disease
Disease vs infection
Infection occurs when viruses, bacteria, or other microbes enter your body and begin to multiply. Disease, which typically happens in a small proportion of infected people, occurs when the cells in your body are damaged as a result of infection, and signs and symptoms of an illness appear.