If you’re interested in public health then infectious disease epidemiology and transmission dynamics is something that you have to get your head around. This video is all about how communicable diseases (those caused by viruses, bacteria, fungi and parasites) spread from person to person. I also talk about the R0 (basic reproductive numbers) which can be used to calculate how many people need to be vaccinated to get to herd immunity. Public health officials use this knowledge to respond to outbreaks, epidemics and pandemics as they occur.

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This video is a brief overview of Infectious Diseases. We will take a look at what they are, some terms used to describe characteristics of infectious diseases and different types. Historically, infectious diseases were the main cause of deaths around the world. Even now, they are a significant global public health issue leading to millions of deaths each year.

This video was created by Ranil Appuhamy
Voiceover – James Clark

For more information about infectious diseases, have a look at these websites:

http://www.who.int/topics/infectious_diseases/en/
https://www.cdc.gov/diseasesconditions/
https://wwwnc.cdc.gov/eid/

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Disclaimer:
These videos are provided for educational purposes only. Users should not rely solely on the information contained within these videos and is not intended to be a substitute for advice from other relevant sources. The author/s do not warrant or represent that the information contained in the videos are accurate, current or complete and do not accept any legal liability or responsibility for any loss, damages, costs or expenses incurred by the use of, or reliance on, or interpretation of, the information contained in the videos.
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Aetiology of disease caused by external factors.
The cause of a disease is correctly described as the aetiology. Aetiology is ‘that which causes’. Factors which may be involved in disease causation are therefore termed aetiological factors. So the aetiology causes the pathophysiology which in turn generates the clinical features of the disease. Aetiological factors may arise from within the individual, or from the environment the person is exposed to. Factors arising from within are called endogenous; those from the environment are exogenous.
Any factor from the environment which contributes to disease aetiology is exogenous. These factors are also commonly referred to as environmental. This environment includes the one experienced in the uterus, before birth.

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Dr. Nipunie Rajapakse discusses COVID-19 and social distancing

Visit us (http://www.khanacademy.org/science/healthcare-and-medicine) for health and medicine content or (http://www.khanacademy.org/test-prep/mcat) for MCAT related content. These videos do not provide medical advice and are for informational purposes only. The videos are not intended to be a substitute for professional medical advice, diagnosis or treatment. Always seek the advice of a qualified health provider with any questions you may have regarding a medical condition. Never disregard professional medical advice or delay in seeking it because of something you have read or seen in any Khan Academy video. Created by Vishal Punwani.

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About a quarter of deaths worldwide–many of them children–are caused by infectious organisms. The World Health Organization reports that new infectious diseases are continuing to emerge and familiar ones are appearing in new locations around the globe. What You Need to Know About Infectious Disease provides an overview of infectious disease, drawing on reports of the Institute of Medicine.

Read the report: http://www.nap.edu/catalog/13006/what-you-need-to-know-about-infectious-disease

Thank you to the Marian Koshland Science Museum
http://www.koshland-science-museum.org/
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This video takes a look at how infectious diseases are transmitted and a look at the different tools we have to control them. We take a quick look at how we can use behavior change, vaccines, surveillance, environmental changes, infection control and medication to control the spread of infectious diseases

This video was created by Ranil Appuhamy
Voiceover – James Clark

For more information about infectious diseases, have a look at these websites:

http://www.who.int/topics/infectious_diseases/en/
https://www.cdc.gov/diseasesconditions/
https://wwwnc.cdc.gov/eid/

——————————————————————————————————–
Disclaimer:
These videos are provided for educational purposes only. Users should not rely solely on the information contained within these videos and is not intended to be a substitute for advice from other relevant sources. The author/s do not warrant or represent that the information contained in the videos are accurate, current or complete and do not accept any legal liability or responsibility for any loss, damages, costs or expenses incurred by the use of, or reliance on, or interpretation of, the information contained in the videos.

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More health and medical news on the Mayo Clinic News Network. https://newsnetwork.mayoclinic.org/

Journalists: Clean and nat sound versions of this pkg available for download at https://newsnetwork.mayoclinic.org/

Register (free) at https://newsnetwork.mayoclinic.org/request-account/

Prevention and testing are two ways Mayo Clinic infectious diseases specialist Dr. Pritish Tosh says could help the nation’s staggering rates of sexually transmitted infection. A recent report from Centers for Disease Control and Prevention (CDC) shows that reported cases of STIs are at an unprecedented high in the U.S .

Dr. Tosh offers a couple of theories on the rise, “One of the things that certainly has changed is some of these social media apps whereas it’s now much easier for people who wish to engage in high risk sexual activity with multiple sex partners to find other people who are interested in engaging in high risk sexual activity with multiple sex partners in real time. And so some of these apps have been thought to contribute, and some studies have shown actually to contribute, to rises in sexually transmitted infections.

More health and medical news on the Mayo Clinic News Network http://newsnetwork.mayoclinic.org/

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