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| Topic | The R0 value in vaccine induced herd immunity makes no sense. |
| DarkRoast 10/08/19 7:06:40 PM #2: | FLOUR posted... So I wanted to use my math skills to understand how herd immunity supposedly works. The value of R0 is used to calculate the threshold percentage a population needs to prevent an outbreak. In the case of measles, R0 is about 15, which means a person with measles will infect 15 others. But it doesn't take into consideration how many interactions that person has. Whether it's 0, 100, or 10,000 that person would supposedly infect 15. So Roast, explain that! The basic reproduction number, R0, is defined as the expected number of secondary cases produced by a single (typical) infection in a completely susceptible population. It is important to note that R0 is a dimensionless number and not a rate For someone who does a "lot of research online" you sure don't know how to Google It's part of a larger set of equations including infection rate, transmissibility, resistance, prevalence, etc. By itself it's essentially meaningless. It's like making a broad statement about something knowing only one of several variables. --- Well allons-y, Alonso! ... Copied to Clipboard! |
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