What Are The 4 Routes Of Transmission?

What are the three main routes of transmission?

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 is the number one mode of transmission?

Contact is the most frequent mode of transmission of health care associated infections and can be divided into: direct and indirect. An example of contact transmitted microorganisms is Noroviruses which are responsible for many gastrointestinal infections.

How do viruses enter the human body?

In humans, viruses that cause disease like cold and flu are spread through bodily fluids, like spit or snot. The virus is so small that it leaves our bodies in these fluids, and can even float through the air in droplets from a sneeze or cough. The virus can enter the body through the eyes, nose, or mouth.

What are the 4 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 route of transmission?

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.

How are viruses transferred?

Viruses spread from person to person mainly in droplets that fly out when you cough or sneeze. These tiny drops from a sick person move through the air and land on the mouths or noses of others nearby.

How do you break the mode of transmission?

Break the chain by cleaning your hands frequently, staying up to date on your vaccines (including the flu shot), covering coughs and sneezes and staying home when sick, following the rules for standard and contact isolation, using personal protective equipment the right way, cleaning and disinfecting the environment, …

What is the difference between a vector and a host?

The host is the living being that the bacteria, virus, protozoan, or other disease-causing microorganism normally resides in. … A vector is an organism that helps transmit infection from one host to another. For example, the mosquito serves as the vector to infect humans with the West Nile virus.

What is a carrier of a disease called?

Disease carrier could refer to: Asymptomatic carrier, a person or organism infected with an infectious disease agent, but displays no symptoms. Genetic carrier, a person or organism that has inherited a genetic trait or mutation, but displays no symptoms.

What are the 5 modes of disease transmission?

Modes of transmissionDirect. Direct contact. Droplet spread.Indirect. Airborne. Vehicleborne. Vectorborne (mechanical or biologic)

Which diseases spread through respiratory route?

Respiratory (droplet) transmissionChickenpox (varicella)Influenza (flu)Measles (rubeola)Pertussis (whooping cough)Respiratory Syncytial Virus (RSV)Tuberculosis (TB)

What are the five basic principles for infection control?

These include standard precautions (hand hygiene, PPE, injection safety, environmental cleaning, and respiratory hygiene/cough etiquette) and transmission-based precautions (contact, droplet, and airborne).

What are the common methods of transmission of diseases Class 9?

Direct TransmissionPerson 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.More items…•Aug 30, 2020

What is the mode of transmission of pneumonia?

Pneumonia can be spread in a number of ways. The viruses and bacteria that are commonly found in a child’s nose or throat, can infect the lungs if they are inhaled. They may also spread via air-borne droplets from a cough or sneeze.

What are the 4 main routes for infection to enter the body?

Microorganisms capable of causing disease—pathogens—usually enter our bodies through the mouth, eyes, nose, or urogenital openings, or through wounds or bites that breach the skin barrier. Organisms can spread—or be transmitted—by several routes.

Is TB spread by contact route?

M. tuberculosis is transmitted through the air, not by surface contact. Transmission occurs when a person inhales droplet nuclei containing M. tuberculosis, and the droplet nuclei traverse the mouth or nasal passages, upper respiratory tract, and bronchi to reach the alveoli of the lungs (Figure 2.2).

What are the 3 major portals of entry for disease?

An anatomic site through which pathogens can pass into host tissue is called a portal of entry. These are locations where the host cells are in direct contact with the external environment. Major portals of entry are identified in Figure 3 and include the skin, mucous membranes, and parenteral routes. Figure 3.

What are the six modes of transmission for communicable diseases?

Infectious agents include helminths, protozoa, bacteria, viruses and fungi. Six factors are involved in the transmission of communicable diseases: the infectious agent, the reservoir, route of exit, mode of transmission, route of entry, and the susceptible host.

How is a virus born?

One theory hypothesizes that viruses arose from circular DNA (also called a plasmid) that can replicate independently and move between cells, transferring genetic information from one organism to another. For example, some plasmids carry the genes responsible for antibiotic drug resistance.

What are the common methods of transmission of diseases?

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.