Author: B Shayak; Mohit Manoj Sharma; Richard H Rand; Awadhesh Kumar Singh; Anoop Misra
Title: Transmission Dynamics of COVID-19 and Impact on Public Health Policy Document date: 2020_4_1
ID: 3ueg2i6w_40
Snippet: (6d) Note that the d/dt of x + y + z + w is not zero but equals R2 a , since some people who are in y again show up in w. Hence x + y + z + w double-counts part of the population and has a positive time derivative, as is consistent (we have explained earlier the advantage of our variable choice). Finally, we have not treated the number of deaths as a separate variable. The tacit assumption is that the mortality count is a fixed percentage [47] of.....
Document: (6d) Note that the d/dt of x + y + z + w is not zero but equals R2 a , since some people who are in y again show up in w. Hence x + y + z + w double-counts part of the population and has a positive time derivative, as is consistent (we have explained earlier the advantage of our variable choice). Finally, we have not treated the number of deaths as a separate variable. The tacit assumption is that the mortality count is a fixed percentage [47] of the number of symptomatic cases w, with the percentage depending on various factors such as average age of the population and quality of healthcare services. From our viewpoint, a dead person is as capable of transmitting disease as a person recovered in quarantine, so w can take care of both of them.
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