What are the 3 main ways of how an infection can get into the body?

the air as droplets or aerosol particles. faecal-oral spread. blood or other body fluids. skin or mucous membrane contact.
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What are the three 3 main routes of transmission?

Figure 1.19. Description: The chain of infection has 3 main parts. A reservoir such as a human and an agent such as an amoeba. The mode of transmission can include direct contact, droplets, a vector such as a mosquito, a vehicle such as food, or the airborne route.
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What are the main ways infection enters 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.
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What are 3 ways you could transmit a bacterial infection?

5 Common Ways Germs are Spread
  • Nose, mouth, or eyes to hands to others: Germs can spread to the hands by sneezing, coughing, or rubbing the eyes and then can be transferred to other family members or friends. ...
  • Hands to food: ...
  • Food to hands to food: ...
  • Infected child to hands to other children: ...
  • Animals to people:
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What are the 3 types of infections?

The three major types of germs we usually hear about are bacteria, viruses, and fungi.
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How do infections spread?



What are the 4 main causes of infection?

Causes of Infections (Germs)
  • Bacteria.
  • Viruses.
  • Protozoa (some of which act as parasites)
  • Fungal organisms (also called fungi).
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How do you get an infection?

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.
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What are three important infections that are transmitted by the contact route?

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.
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What are the 4 routes of transmission?

Diseases can spread in many ways
  • Airborne transmission. Airborne transmission occurs when infectious agents are carried by dust suspended in the air. ...
  • Respiratory (droplet) transmission. ...
  • Sexually transmitted diseases (STDs) ...
  • Animal or insect transmission. ...
  • Food or water transmission. ...
  • Health care transmission.
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What are four ways that infection can be spread?

Germs can spread from person to person through:
  • the air as droplets or aerosol particles.
  • faecal-oral spread.
  • blood or other body fluids.
  • skin or mucous membrane contact.
  • sexual contact.
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What is the most common route of infection?

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.
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What are the most common sources of infection?

Common sources of infection

Sources, e.g. airborne, blood borne, sexually transmitted, fecal, oral, environment, stagnant water, warm-water systems, animals.
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Which three main elements make up the chain of infection?

The Infectious Agent – or the microorganism which has the ability to cause disease. The Reservoir or source of infection where the microorganism can live and thrive. This may be a person, an animal, any object in the general environment, food or water. The Portal of Exit from the reservoir.
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How do bacteria enter the body?

For example, they can come into your body through your mouth, or your nose, or your ears. Because bacteria are very small, they can even come in through very small openings, such as the pores of your skin! Your body has a lot of defenses to keep the bad bacteria from coming in too far through these openings.
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What are the three types of transmission-based precautions quizlet?

The three types of transmission-based precautions are airborne, droplet, and contact.
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What are 3 types of isolation precautions?

Transmission-Based Precautions. There are three categories of Transmission-Based Precautions: Contact Precautions, Droplet Precautions, and Airborne Precautions.
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What are the three most common reservoir hosts?

The reservoir

Common reservoirs for infectious agents include humans, animals or insects and the environment.
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What is the main route to spread infection NHS?

Contaminated hands are the most common way in which microorganisms are spread but there are other modes such as coughing, sneezing and diarrhoea. These infectious agents need a way to enter the body such as ingestion, inhalation and inoculation.
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What is infection in human body?

(in-FEK-shun) The invasion and growth of germs in the body. The germs may be bacteria, viruses, yeast, fungi, or other microorganisms. Infections can begin anywhere in the body and may spread all through it. An infection can cause fever and other health problems, depending on where it occurs in the body.
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What are the three most common causes of sepsis?

Bacterial infections are the most common cause of sepsis. Sepsis can also be caused by fungal, parasitic, or viral infections.
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What is infection and what causes it?

An infection occurs when a microorganism enters a person's body and causes harm. The microorganism uses that person's body to sustain itself, reproduce, and colonize. These infectious microscopic organisms are known as pathogens, and they can multiply quickly. Examples of pathogens include: bacteria.
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What causes infection in Virgina?

What causes vaginal infections?
  • Bacterial infections. An overgrowth of certain bacteria naturally found in your vagina can cause BV. ...
  • Yeast infections. ...
  • Trichomoniasis. ...
  • Vaginal atrophy. ...
  • Douching. ...
  • Soap, body wash, and perfume. ...
  • Spermicidal contraceptives. ...
  • Tight-fitting or synthetic clothing.
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What are the chain of infection links in order?

No matter the germ, there are six points at which the chain can be broken and a germ can be stopped from infecting another person. The six links include: the infectious agent, reservoir, portal of exit, mode of transmission, portal of entry, and susceptible host.
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What is the chain of infection quizlet?

Transmission occurs when the agent leaves its reservoir or host through a portal of exit, is conveyed by some mode of transmission, and enters through an appropriate portal of entry to infect a susceptible host.
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What are the three 3 common causes of infection transmission in a home based environment?

Transmission of infection
  • breathing in airborne germs – coughs or sneezes release airborne pathogens, which are then inhaled by others.
  • touching contaminated objects or eating contaminated food – the pathogens in a person's faeces may be spread to food or other objects, if their hands are dirty.
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