The basic difference between biological transmission and mechanical transmission is that in biological transmission, the agent develops and/or propagates within the vector, while in mechanical transmission, the simple transfer of agents from one infected host or a contaminated substrate to a susceptible host occurs.


What is a carrier of infection? An asymptomatic carrier (healthy carrier or just carrier) is a person or other organism that has become infected with a pathogen, but that displays no signs or symptoms. Although unaffected by the pathogen, carriers can transmit it to others or develop symptoms in later stages of the disease.

what is the difference between mechanical and biological transmission of a disease by arthropods?

(a) A mechanical vector carries a pathogen on its body from one host to another, not as an infection. (b) A biological vector carries a pathogen from one host to another after becoming infected itself. Most arthropod vectors transmit the pathogen by biting the host, creating a wound that serves as a portal of entry.

What are the most common mechanisms of transmission? Some mechanisms of transmission might logically fit into more than one category. For example, fecal-oral transmission occurs most commonly via "common vehicle transmission," i.e., ingestion of infectious agents in contaminated food or water, but fecal-oral transmission can also occur directly during anal sexual contact.

What are the 3 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. This can occur, for example, through ingestion, breathing, or skin puncture.

How are pathogens may be transmitted? Pathogens are different and can cause disease upon entering the body. Pathogens can be transmitted a few ways depending on the type. They can be spread through skin contact, bodily fluids, airborne particles, contact with feces, and touching a surface touched by an infected person.

How is infection transmitted? Infectious diseases commonly spread through the direct transfer of bacteria, viruses or other germs from one person to another. This can happen when an individual with the bacterium or virus touches, kisses, or coughs or sneezes on someone who isn't infected.

What is Mesoendemic?

mesoendemic. Adjective. (not comparable) (medicine) Having some transmission in an area.

What is a biological vector?

Vector (biology) Traditionally in medicine, a vector is an organism that does not cause disease itself but which spreads infection by conveying pathogens from one host to another. Species of mosquito, for example, serve as vectors for the deadly disease Malaria.

What are the 6 modes of transmission?

The six links include: the infectious agent, reservoir, portal of exit, mode of transmission, portal of entry, and susceptible host. The way to stop germs from spreading is by interrupting this chain at any link.

What is the most effective way to prevent infection?

Hand washing is the single most effective way to prevent the spread of infections. You can spread certain "germs" (a general term for microbes like viruses and bacteria) casually by touching another person.

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 is Cyclopropagative transmission?

Cyclopropagative transmission. In this type of transmission, the pathogen undergoes a developmental cycle (changes from one stage to another) as well as multiplication in the body of the arthropod.

What do you mean by pathogens?

A pathogen is a tiny living organism, such as a bacterium or virus, that makes people sick. Washing your hands frequently helps you avoid the pathogens that can make you sick.

What is the difference between vertical and horizontal transmission?

In general, transmission of viruses can occur through two pathways: horizontal and vertical transmission. In horizontal transmission, viruses are transmitted among individuals of the same generation, while vertical transmission occurs from mothers to their offspring.

What is Incubatory carrier?

Incubatory carriers are those who can transmit the agent during the incubation period before clinical illness begins. Convalescent carriers are those who have recovered from their illness but remain capable of transmitting to others.