What are three ways infections are spread from host to host?

The mode of transmission can include direct contact, droplets, a vector such as a mosquito, a vehicle such as food, or the airborne route. The susceptible host has multiple portals of entry such as the mouth or a syringe.

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

the air as small droplets (droplet spread) or tiny aerosol particles (airborne spread) contact with faeces (poo) and then with the mouth (faeco-oral spread) contact with the skin or mucus membranes (the thin moist lining of many parts of the body such as the nose, mouth, throat and genitals) (contact spread)

What 3 Ways Can bacteria cause disease in the host?

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 3 elements make up the chain of infection?

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. …
  • The Portal of Exit from the reservoir. …
  • The Mode of Transmission. …
  • The Portal of Entry. …
  • The Susceptible Host.
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What are four ways that infection can be spread?

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:

What are 3 ways to reduce possible spread of infection?

Prevent the spread of infectious disease

  • Immunise against infectious diseases.
  • Wash and dry your hands regularly and well.
  • Stay at home if you are sick.
  • Cover coughs and sneezes.
  • Clean surfaces regularly.
  • Ventilate your home.
  • Prepare food safely.
  • Practise safe sex.

How are diseases spread?

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.

How are bacteria spread?

Bacteria are transmitted to humans through air, water, food, or living vectors. The principal modes of transmission of bacterial infection are contact, airborne, droplet, vectors, and vehicular.

What are the 5 major types of infectious agents?

The five main types of infectious agents are bacteria, protozoa, viruses, parasitic worms, and fungi. RNA, and sometimes fatty molecules known as lipids.

What are the 4 types of infections?

There are four main types of infections: Viral. Bacterial.

This can cause symptoms such as fever, headache, and rash.

  • Viral infection. Viruses can cause a wide range of infectious diseases. …
  • Bacterial infection. …
  • Fungal infection. …
  • Parasitic infection.
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What is the host in the chain of infection?

This is the organism (e.g., You or your resident!) that will feel the effects of the infectious disease that has traveled through the chain of infection. How susceptible a host may be, depends on many factors: Age. The very young or very old are usually more susceptible.

What are the modes of transmission?

The term modes of transmission refer to how an infectious agent, also called a pathogen, can be transferred from one person, object, or animal, to another. Viruses, bacteria, parasites, or fungi can spread infectious diseases.

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.

What are the most common sources infectious agents are transmitted from?

The most common sources of infectious agents causing HAI, described in a scientific review of 1,022 outbreak investigations,20 are (listed in decreasing frequency) the individual patient, medical equipment or devices, the hospital environment, the health care personnel, contaminated drugs, contaminated food, and …