The transmission of microorganisms can be divided into the following five main routes: direct contact, fomites, aerosol (airborne), oral (ingestion), and vectorborne. Some microorganisms can be transmitted by more than one route.
What does transmission route mean?
The pathway of causative agents from a source to infection of a susceptible host is called ‘transmission route’. The characteristic of the transmission route depends mainly on the characteristics of the causative agent and those of the host.
What is the route of transmission of bacteria?
Bacteria are transmitted to humans through air, water, food, or living vectors. The principal modes of transmission of bacterial infection are contact, airborne, droplet, vectors, and vehicular. Preventive measures have a dramatic impact on morbidity and mortality.
Which is a transmission route of viruses?
Respiratory (droplet) transmission
Some disease-causing bacteria and viruses are carried in the mouth, nose, throat and respiratory tree. They can spread by coming into direct contact with droplets when an infected person coughs or sneezes, or through saliva or mucus on unwashed hands.
What is the most common route of transmission?
Contact transmission is the most common form of transmitting diseases and virus. 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.
What does portal of entry mean?
The portal of entry is the means by which an infection is able to enter a susceptible host. Portals of entry into the human body include: Inhalation (via the respiratory tract) Absorption (via mucous membranes such as the eyes) Ingestion (via the gastrointestinal tract)
What is the main route to spread infection NHS?
Contaminated hands are the most common way in which microorganisms are spread but there are other modes such as coughing, sneezing and diarrhoea. These infectious agents need a way to enter the body such as ingestion, inhalation and inoculation.
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 8 modes of transmission?
Modes of transmission
- Direct. Direct contact. Droplet spread.
- Indirect. Airborne. Vehicleborne. Vectorborne (mechanical or biologic)
What are the principle routes of transmission of nosocomial infections?
Nosocomial infections, that develop as a result of a stay in hospital or are produced by micro-organisms and viruses acquired during hospitalisation may have several different transmission routes: contact, droplet, air, water, food, or disease vector carrying and transmitting an infectious pathogen, or blood.
What transmission means?
: the act or process of sending electrical signals to a radio, television, computer, etc. : something (such as a message or broadcast) that is transmitted to a radio, television, etc. : the act or process by which something is spread or passed from one person or thing to another.
What are the 5 modes of 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 is the respiratory route?
The respiratory route may refer to: Airborne disease. A route of administration of drugs, including nasal administration, inhalation and insufflation. Transmission of pathogens via respiratory droplets.
What is the difference between droplet transmission and airborne transmission?
They may also fall on surfaces and then be transferred onto someone’s hand who then rubs their eyes, nose or mouth. Airborne transmission occurs when bacteria or viruses travel in droplet nuclei that become aerosolized. Healthy people can inhale the infectious droplet nuclei into their lungs.