Quick Answer: What Is The Term For A Biological Or Physical Means Of Transmission?

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..

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 is the difference between a reservoir and a vector?

A disease reservoir is analogous to a water reservoir. But instead of supplying water, a disease reservoir serves as a supply for a virus or other pathogen. Vector: Any living creature that can pass an infection to another living creature.

Which is the most common type of biological vector of human disease?

ArthropodsArthropods are the most common type of biological vector of human disease. A mosquito bites a person who subsequently develops a fever and abdominal rash.

Are humans considered vectors?

These factors include animals hosting the disease, vectors, and people. Humans can also be vectors for some diseases, such as Tobacco mosaic virus, physically transmitting the virus with their hands from plant to plant.

What are the ways to break the cycle 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 are the common methods of transmission of diseases Class 9?

Disease 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…•

What are infectious agents class 9?

Infectious diseases are the diseases caused by various pathogenic microorganisms such as virus, bacteria, protozoan, fungi, and other parasites. These infectious diseases can be transmitted by animals, humans, insects or other agents.

What are airborne diseases Class 9?

– Air-borne diseases, as the name suggests spread through air. This occurs through the droplets released by an infected person during coughing or sneezing. When these droplets are inhaled by another person, he may also get infected.

What is a biological vector transmission?

A vector is a living organism that transmits an infectious agent from an infected animal to a human or another animal. … Biological vectors, such as mosquitoes and ticks may carry pathogens that can multiply within their bodies and be delivered to new hosts, usually by biting.

What are the 4 major disease vectors?

Disease vectorsMalaria (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.More items…

What is mechanical transmission of disease?

Mechanical transmission means the transfer of pathogens from an infected host or a contaminated substrate to a susceptible host, where a biological association between the pathogen and the vector is not necessary.

Which diseases are spread due to close contact?

Many illnesses spread through contact transmission. Examples are chicken pox, common cold, conjunctivitis (Pink Eye), Hepatitis A and B, herpes simplex (cold sores), influenza, measles, mononucleosis, Fifth disease, pertussis, adeno/rhino viruses, Neisseria meningitidis and mycoplasma pneumoniae.

Which disease is not transmitted by mosquitoes?

Mosquitoes are carriers for several infamous viruses, most notably malaria and dengue fever. In fact, mosquitoes, through mosquito borne diseases, kill more people per year than any other animal. Luckily for humans, the HIV virus is not carried or spread by mosquitoes.

What are the 5 modes of transmission?

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

What is the difference between mechanical and biological transmission?

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 are the common methods of transmission of disease?

Infectious diseases are transmitted from person to person by direct or indirect contact….Indirect contactAirborne transmission. … Contaminated objects. … Food and drinking water. … Animal-to-person contact. … Animal reservoirs. … Insect bites (vector-borne disease)More items…•

What is the mode of transmission of pneumonia?

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. In addition, pneumonia may spread through blood, especially during and shortly after birth.