In direct transmission, an infectious agent is transferred from a reservoir to a susceptible host by direct contact or droplet spread. Direct contact occurs through skin-to-skin contact, kissing, and sexual intercourse. Direct contact also refers to contact with soil or vegetation harboring infectious organisms.
What are the five means of transmission of infection?
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 are the 4 ways that an infection can be transmitted directly?
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. This can occur, for example, through ingestion, breathing, or skin puncture.
What is direct contact diseases?
Direct Contact Diseases
These are diseases caused by microorganisms that are spread by person-to-person contact or indirect contact with contaminated objects.
Which disease spread through direct touch?
Chickenpox is transmitted from one person to another by directly touching the blisters, saliva or mucus of an infected person. The disease results in a skin rash that forms small and itchy blisters.
What are 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 common methods of transmission of diseases?
- Airborne transmission. Some infectious agents can travel long distances and remain suspended in the air for an extended period of time. …
- Contaminated objects. …
- Food and drinking water. …
- Animal-to-person contact. …
- Animal reservoirs. …
- Insect bites (vector-borne disease) …
- Environmental reservoirs.
What are the 3 main ways infection can get into 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 four types of infection?
This article will focus on the most common and deadly types of infection: bacterial, viral, fungal, and prion.
What are the main routes that infection can 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.
What diseases are caused by indirect contact?
Diseases that are typically spread by inhalation of medium sized droplets include bacteria (e.g., Neisseria meningitidis [a cause of bacterial meningitis] and Streptococcus) and viruses (e.g., many viruses causing the common cold, laryngitis, tracheitis and also influenza viruses).
What are the 6 steps in the chain of infection?
The 6 points include: the infectious agent, reservoir, portal of exit, means of transmission, portal of entry, and susceptible host. The way to stop germs from spreading is by interrupting the chain at any link.
Is mode of transmission by kissing?
Kissing offers many health benefits, but may also transmit a small number of disease-causing bacteria and viruses. Bacteria and viruses in the saliva or blood of one person can be spread to another person by kissing. Some diseases are more easily spread than others.