What are the 4 types of disease transmission?
The modes (means) of transmission are: Contact (direct and/or indirect), Droplet, Airborne, Vector and Common Vehicle. The portal of entry is the means by which the infectious microorganisms gains access into the new host.
What are the 5 modes of disease transmission?
The transmission of microorganisms can be divided into the following five main routes: direct contact, fomites, aerosol (airborne), oral (ingestion), and vectorborne.
What is the basic type of disease transmission?
Infectious diseases are commonly transmitted through direct person-to-person contact. Transmission occurs when an infected person touches or exchanges body fluids with someone else. This can happen before an infected person is aware of the illness. Sexually transmitted diseases (STDs) can be transmitted this way.
What are the three types of transmission of infectious diseases?
There are three types of transmission-based precautions–contact, droplet, and airborne – the type used depends on the mode of transmission of a specific disease.
What are the two kinds of transmission?
There are two types of contact transmission: direct and indirect. Direct contact transmission occurs when there is physical contact between an infected person and a susceptible person. Indirect contact transmission occurs when there is no direct human-to-human contact.
What are the 4 main routes for infection to enter the body?
Pathogens can enter the body by coming into contact with broken skin, being breathed in or eaten, coming into contact with the eyes, nose and mouth or, for example when needles or catheters are inserted.
What are the 6 modes of disease transmission?
Modes of transmission
- Direct. Direct contact. Droplet spread.
- Indirect. Airborne. Vehicleborne. Vectorborne (mechanical or biologic)
What are the 4 major disease vectors?
- Malaria (protozoan): Anopheles species of mosquito.
- Lymphatic filariasis (nematode worm): Culex, Anopheles, Aedes species of mosquito.
- Dengue (virus): Aedes species of mosquito.
- Leishmaniasis (protozoan): mainly Phlebotomus species of sandfly.
What are the common methods of transmission of diseases Class 9?
- Person to Person. When an infected person comes in contact with or exchanges body fluids with a non-infected person. …
- Droplet Transmission. …
- Spread by skin. …
- Spread through body fluids or blood. …
- Airborne Transmission. …
- Contaminated Objects. …
- Vector-Borne Diseases. …
- 4.Food and Drinking Water.
What are the three types of transmission cycles in the spread of arthropod disease?
Arthropods transmit parasites either by injection into the blood stream of the host directly via their salivary glands, or by forcing parasites into a pool of blood which develops when chewing the skin.
What is mechanical disease transmission?
Mechanical transmission of disease.
Mechanical transmission of disease pathogens occurs when a vector transports organisms, such as bacteria that cause dysentery, on its feet, body hairs and other body surfaces to the host. There is no multiplication or development of the pathogen within the vector’s body.
What is biological transmission?
Biological transmission occurs when the vector uptakes the agent, usually through a blood meal from an infected animal, replicates and/or develops it, and then regurgitates the pathogen onto or injects it into a susceptible animal. Fleas, ticks, and mosquitoes are common biological vectors of disease.
Is pneumonia droplet or airborne?
Droplet Precautions—used for diseases or germs that are spread in tiny droplets caused by coughing and sneezing (examples: pneumonia, influenza, whooping cough, bacterial meningitis).
What is an example of droplet transmission?
Examples of microorganisms that are spread by droplet transmission are: influenza, colds, respiratory syncytial virus (RSV) and some organisms causing pneumonia.