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What Are Communicable Diseases and How They Spread

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3/18/2023

Biology

Communicable diseases

What Are Communicable Diseases and How They Spread

Communicable diseases are infectious illnesses caused by pathogens that can easily spread from one person to another. This summary explores the types of pathogens and diseases they cause, their characteristics, and transmission methods.

  • Pathogens are micro-organisms that enter the body and cause disease
  • Four main types: bacteria, viruses, protists, and fungi
  • Transmission occurs through water, air, and direct contact
  • Understanding pathogens is crucial for prevention and treatment
...

3/18/2023

7587

Communicable disease.
Pathogens:
Pathogens are micro-organisms that enter the body and cause disease.
They cause communicable diseases.
infe

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Transmission of Communicable Diseases

This page discusses the various routes of transmission for communicable diseases, highlighting how pathogens spread from one host to another.

Water-borne transmission occurs when pathogens are picked up by drinking or bathing in contaminated water.

Example: Cholera, a bacterial infection, is spread through drinking water contaminated with the cholera bacterium.

Airborne transmission involves pathogens carried in the air, which can be breathed in by potential hosts. Some airborne pathogens are carried in droplets produced when an infected person coughs or sneezes, known as droplet infection.

Vocabulary: Droplet infection refers to the spread of pathogens through small liquid particles expelled from an infected person's respiratory tract.

Direct contact transmission happens when pathogens are transferred through touching contaminated surfaces, including skin.

Example: Athlete's foot, a fungal infection, is commonly spread by direct contact with contaminated surfaces.

Sexual contact is another form of direct contact that can transmit pathogens between individuals.

Understanding these transmission routes is essential for implementing effective prevention strategies and controlling the spread of communicable diseases. By identifying the specific transmission method for each pathogen, public health measures can be tailored to interrupt the chain of infection and protect populations from disease outbreaks.

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Biology

7,587

Mar 18, 2023

2 pages

What Are Communicable Diseases and How They Spread

Communicable diseases are infectious illnesses caused by pathogens that can easily spread from one person to another. This summary explores the types of pathogens and diseases they cause, their characteristics, and transmission methods.

  • Pathogensare micro-organisms that enter the... Show more

Communicable disease.
Pathogens:
Pathogens are micro-organisms that enter the body and cause disease.
They cause communicable diseases.
infe

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Transmission of Communicable Diseases

This page discusses the various routes of transmission for communicable diseases, highlighting how pathogens spread from one host to another.

Water-borne transmission occurs when pathogens are picked up by drinking or bathing in contaminated water.

Example: Cholera, a bacterial infection, is spread through drinking water contaminated with the cholera bacterium.

Airborne transmission involves pathogens carried in the air, which can be breathed in by potential hosts. Some airborne pathogens are carried in droplets produced when an infected person coughs or sneezes, known as droplet infection.

Vocabulary: Droplet infection refers to the spread of pathogens through small liquid particles expelled from an infected person's respiratory tract.

Direct contact transmission happens when pathogens are transferred through touching contaminated surfaces, including skin.

Example: Athlete's foot, a fungal infection, is commonly spread by direct contact with contaminated surfaces.

Sexual contact is another form of direct contact that can transmit pathogens between individuals.

Understanding these transmission routes is essential for implementing effective prevention strategies and controlling the spread of communicable diseases. By identifying the specific transmission method for each pathogen, public health measures can be tailored to interrupt the chain of infection and protect populations from disease outbreaks.

Communicable disease.
Pathogens:
Pathogens are micro-organisms that enter the body and cause disease.
They cause communicable diseases.
infe

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Improve your grades

Join milions of students

By signing up you accept Terms of Service and Privacy Policy

Types of Pathogens and Their Characteristics

Communicable diseases are caused by various types of pathogens, each with unique characteristics and methods of causing illness. This page explores the four main categories of pathogens: bacteria, viruses, protists, and fungi.

Bacteria are very small cells that can reproduce inside the human body. They cause illness by producing toxins that damage cells and tissues.

Vocabulary: Toxins are poisonous substances produced by living organisms.

Viruses are not cells but are extremely tiny particles that reproduce rapidly inside the body. They invade host cells and use the cell's machinery to replicate themselves.

Example: When a virus-infected cell bursts, it releases many new viruses, causing cell damage and illness.

Protists are single-celled eukaryotes, some of which are parasites. These parasites live on or inside other organisms and can cause damage to their hosts.

Definition: A vector is an organism that transfers a pathogen to another organism without getting the disease itself.

Fungi can be single-celled or have a body made up of hyphae, which are thread-like structures. These hyphae can penetrate human skin and plant surfaces, causing diseases.

Highlight: Fungi can produce spores, which are reproductive units that can spread to other plants and animals, potentially causing infection.

Understanding the differences between bacteria, viruses, fungi, and parasites is crucial in health and social care settings, as each type of pathogen requires different prevention and treatment approaches.

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Paul T

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The app is very easy to use and well designed. I have found everything I was looking for so far and have been able to learn a lot from the presentations! I will definitely use the app for a class assignment! And of course it also helps a lot as an inspiration.

Stefan S

iOS user

This app is really great. There are so many study notes and help [...]. My problem subject is French, for example, and the app has so many options for help. Thanks to this app, I have improved my French. I would recommend it to anyone.

Samantha Klich

Android user

Wow, I am really amazed. I just tried the app because I've seen it advertised many times and was absolutely stunned. This app is THE HELP you want for school and above all, it offers so many things, such as workouts and fact sheets, which have been VERY helpful to me personally.

Anna

iOS user

I think it’s very much worth it and you’ll end up using it a lot once you get the hang of it and even after looking at others notes you can still ask your Artificial intelligence buddy the question and ask to simplify it if you still don’t get it!!! In the end I think it’s worth it 😊👍 ⚠️Also DID I MENTION ITS FREEE YOU DON’T HAVE TO PAY FOR ANYTHING AND STILL GET YOUR GRADES IN PERFECTLY❗️❗️⚠️

Thomas R

iOS user

Knowunity is the BEST app I’ve used in a minute. This is not an ai review or anything this is genuinely coming from a 7th grade student (I know 2011 im young) but dude this app is a 10/10 i have maintained a 3.8 gpa and have plenty of time for gaming. I love it and my mom is just happy I got good grades

Brad T

Android user

Not only did it help me find the answer but it also showed me alternative ways to solve it. I was horrible in math and science but now I have an a in both subjects. Thanks for the help🤍🤍

David K

iOS user

The app's just great! All I have to do is enter the topic in the search bar and I get the response real fast. I don't have to watch 10 YouTube videos to understand something, so I'm saving my time. Highly recommended!

Sudenaz Ocak

Android user

In school I was really bad at maths but thanks to the app, I am doing better now. I am so grateful that you made the app.

Greenlight Bonnie

Android user

I found this app a couple years ago and it has only gotten better since then. I really love it because it can help with written questions and photo questions. Also, it can find study guides that other people have made as well as flashcard sets and practice tests. The free version is also amazing for students who might not be able to afford it. Would 100% recommend

Aubrey

iOS user

Best app if you're in Highschool or Junior high. I have been using this app for 2 school years and it's the best, it's good if you don't have anyone to help you with school work.😋🩷🎀

Marco B

iOS user

THE QUIZES AND FLASHCARDS ARE SO USEFUL AND I LOVE THE SCHOOLGPT. IT ALSO IS LITREALLY LIKE CHATGPT BUT SMARTER!! HELPED ME WITH MY MASCARA PROBLEMS TOO!! AS WELL AS MY REAL SUBJECTS ! DUHHH 😍😁😲🤑💗✨🎀😮

Elisha

iOS user

This app is phenomenal down to the correct info and the various topics you can study! I greatly recommend it for people who struggle with procrastination and those who need homework help. It has been perfectly accurate for world 1 history as far as I’ve seen! Geometry too!

Paul T

iOS user