Apparent infection rate is an estimate of the rate of progress of a disease, based on proportional measures of the extent of infection at different times. Firstly, a proportional measure of the extent of infection is chosen as the disease extent metric. For example, the metric might be the proportion of leaf area affected by mildew, or the proportion of plants in a population showing dieback lesions. Measures of disease extent are then taken over time, and a mathematical model is fit. The model is based upon two assumptions: * the progress of the infection is constrained by the amount of tissue that remains to be infected; and * if it were not so constrained, the extent of infection would exhibit exponential growth. There is a single model parameter r, which is the apparent infection rate. It can be calculated analytically using the formula where r is the apparent infection ratet1 is the time of the first measurementt2 is the time of the second measurementx1 is the proportion of infection measured at time t1x2 is the proportion of infection measured at time t2 (Wikipedia).
Exponential Growth Rates (1 of 2: Instantaneous)
More resources available at www.misterwootube.com
From playlist Rates of Change
Lesson: Calculate a Confidence Interval for a Population Proportion
This lesson explains how to calculator a confidence interval for a population proportion.
From playlist Confidence Intervals
Understanding the Ebola Outbreak I Lecture I Exploratorium
The Ebola virus has spread from West Africa to the United States with three confirmed cases and one death. The outbreak is generating fear, airport screenings, and a storm of media coverage. But how worried should we really be? Get the facts about Ebola from UCSF physician and infectious d
From playlist Collection Favorites
Statistics: Ch 6 The Normal Probability Distribution (8 of 28) Standard Deviation: Example
Visit http://ilectureonline.com for more math and science lectures! To donate: http://www.ilectureonline.com/donate https://www.patreon.com/user?u=3236071 We will study the example of the normal probability distribution of the height of males over the age of 20 in the US given that mu=5’
From playlist STATISTICS CH 6 THE NORMAL PROBABILITY DISTRIBUTION
Yale AIDS Colloquium Series (YACS) -- Susan L. Cassels, Ph.D., M.P.H.
Presented by the Center for Interdisciplinary Research on AIDS at Yale University, the Yale AIDS Colloquium Series (YACS) is an interdisciplinary academic forum for discussion of HIV/AIDS-related research and policy.
From playlist Center for Interdisciplinary Research on AIDS
Irrigation Efficiencies - Part 1
From playlist TEMP 1
Derivation of the basic reproductive ratio from the SIR model | Differential Equations for Engineers
When does an epidemic occur? The SIR model provides an answer in terms of the basic reproductive ratio.
From playlist Differential Equations for Engineers
Statistics 5_1 Confidence Intervals
In this lecture explain the meaning of a confidence interval and look at the equation to calculate it.
From playlist Medical Statistics
Exponential Growth Models - Part 2 of 2
http://mathispower4u.wordpress.com/
From playlist Exponential and Logarithmic Expressions and Equations
History of the 1918 Influenza Pandemic
The History Guy remembers humanity's deadliest flu outbreak, the influenza pandemic of 1918. The History Guy uses images that are in the Public Domain. As photographs of actual events are often not available, I will sometimes use photographs of similar events or objects for illustration.
From playlist Europe
Why Are Antibiotics And Vaccines Failing Us? [4K] | The Battle Against Superbugs | Spark
Antibiotics designed to save us from bacteria have turned them into our deadliest enemies. Is there a solution to this emerging threat? - Subscribe to Spark for more amazing science, tech & engineering videos: https://goo.gl/LIrlur 🚀 Find us on: Facebook: https://www.facebook.com/SparkDo
From playlist The UnEarth Series
6. Smallpox (I): 'The Speckled Monster'
Epidemics in Western Society Since 1600 (HIST 234) In the eighteenth century, smallpox succeeded plague as the most feared disease. The two maladies, however, are very different. While plague is a bacterial disease, smallpox is viral. Plague is spread by rats and fleas, smallpox is tran
From playlist Epidemics in Western Society Since 1600 with Frank Snowden
Ebola Breakout from the Hot Zone
Richard Preston has written nine books, including The Hot Zone, The Demon in the Freezer, and The Wild Trees. His books have been translated into more than 30 languages, and most of them have first appeared as articles in The New Yorker. Preston has won numerous awards, including the Ameri
From playlist Franke Program in Science and the Humanities
A mathematical adventure in immunology by Carmen Molina-Paris
KAAPI WITH KURIOSITY A MATHEMATICAL ADVENTURE IN IMMUNOLOGY SPEAKER: Carmen Molina-Paris (School of Mathematics, University of Leeds, UK) WHEN: 4pm to 5pm Sunday, 07 July 2019 WHERE:J. N. Planetarium, Sri T. Chowdaiah Road, High Grounds, Bangalore Our immune system is an extraordinary
From playlist Kaapi With Kuriosity (A Monthly Public Lecture Series)
ETH Lecture 07. Systems Dynamics III: Market Growth & Sales Modelling (03/11/2011)
Course: Systems Dynamics and Complexity (Fall 2011) from ETH Zurich. Source: http://www.video.ethz.ch/lectures/d-mtec/2011/autumn/351-0541-00L.html
From playlist ETH Zürich: Systems Dynamics and Complexity (Fall 2011) | CosmoLearning Mathematics
Epidemics on networks: thresholds and control strategies by AJ Ganesh (Part 1)
Games, Epidemics and Behavior URL: http://www.icts.res.in/discussion_meeting/geb2016/ DATES: Monday 27 Jun, 2016 - Friday 01 Jul, 2016 VENUE : Madhava lecture hall, ICTS Bangalore DESCRIPTION: The two main goals of this Discussion Meeting are: 1. To explore the foundations of policy d
From playlist Games, Epidemics and Behavior
1858 Staten Island Quarantine War
In 1800, the state of New York established a marine hospital on Staten Island used to quarantine passengers entering New York harbor who showed signs of illness. Residents opposed "the Quarantine" from the start. By 1858, they had had enough. The History Guy remembers the 1858 Staten Isla
From playlist History without War
14. Demographic Transition in Developing Countries
Global Problems of Population Growth (MCDB 150) By 1950, in most of the underdeveloped world, mortality had fallen to about half its pre-modern rate. The birth rate, however, had remained high and, by 1950, was about twice the death rate. For the rest of the century, both rates fell dra
From playlist Global Problems of Population Growth with Robert Wyman
One of the oddest facts about the tragedy of suicide is that it isn’t as common in every country, society and age. Rates of suicide appear to rise enormously the more a society becomes wealthy and industrialised. Why should this be? And how can we learn from this about how we might better
From playlist SELF