What are the 3 main modes of disease transmission?

What are the types of disease 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 3 ways pathogens are spread?

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.

Which are the various modes of transmission of infection explain?

Pathogens may be transferred from the source to a host by direct or indirect contact transmission and by respiratory transmission. Respiratory transmission may result from inhalation of droplets; or from inhalation of droplet nuclei, i.e., airborne transmission.

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. This can occur, for example, through ingestion, breathing, or skin puncture.

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What are the 4 routes of transmission?

Routes of transmission

  • Direct Contact Transmission. Direct contact transmission occurs through direct body contact with the tissues or fluids of an infected individual. …
  • Fomite Transmission. …
  • Aerosol (Airborne) Transmission. …
  • Oral (Ingestion) Transmission. …
  • Vector-Borne Transmission. …
  • Zoonotic Transmission.

What are the 4 types of pathogens?

A variety of microorganisms can cause disease. Pathogenic organisms are of five main types: viruses, bacteria, fungi, protozoa, and worms. Some common pathogens in each group are listed in the column on the right. Infectious agents can grow in various body compartments, as shown schematically in Fig.

What are the 7 pathogens?

Infectious diseases are caused by pathogens, which include bacteria, fungi, protozoa, worms, viruses, and even infectious proteins called prions.

What do all germs have in common?

Different germs have favorite places they like to live, different ways to spread and their own unique ways of causing infections. And all germs have one thing in common: When they find a place that is good for them to live, they set up a home for themselves and multiply.

What are the 5 modes of disease transmission?

Modes of transmission

  • Direct. Direct contact. Droplet spread.
  • Indirect. Airborne. Vehicleborne. Vectorborne (mechanical or biologic)

What are infectious diseases Class 9?

Infectious Diseases: The diseases which spread due to infection by micro-organisms are called infectious diseases. When a disease causing organism enters our body it causes infection, it multiplies and grows in the body called host and micro-organisms multiplies in the host body.

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.

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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 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.

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