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A certain disease has a basic reproduction number (R0) of 3. If one infected per

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Question: A certain disease has a basic reproduction number (R0) of 3. If one infected person enters a population of 1000, how many people could potentially be infected after one generation? (2021)

Options:

  1. 300
  2. 600
  3. 900
  4. 1200

Correct Answer: 300

Exam Year: 2021

Solution: 

If R0 = 3, then 1 infected person can infect 3 others. Therefore, potential infections = 3 * 1 = 3 people.

A certain disease has a basic reproduction number (R0) of 3. If one infected per

Practice Questions

Q1
A certain disease has a basic reproduction number (R0) of 3. If one infected person enters a population of 1000, how many people could potentially be infected after one generation? (2021)
  1. 300
  2. 600
  3. 900
  4. 1200

Questions & Step-by-Step Solutions

A certain disease has a basic reproduction number (R0) of 3. If one infected person enters a population of 1000, how many people could potentially be infected after one generation? (2021)
  • Step 1: Understand what R0 means. R0 (basic reproduction number) indicates how many people one infected person can infect.
  • Step 2: Note the value of R0 given in the question, which is 3.
  • Step 3: Since R0 is 3, this means that one infected person can infect 3 other people.
  • Step 4: Calculate the potential number of new infections by multiplying the number of infected people (1) by R0 (3).
  • Step 5: Perform the calculation: 1 infected person * 3 = 3 potential new infections.
  • Step 6: Conclude that after one generation, 3 people could potentially be infected.
  • Basic Reproduction Number (R0) – R0 represents the average number of secondary infections produced by one infected individual in a completely susceptible population.
  • Population Dynamics – Understanding how infections spread within a population based on R0 and initial infected individuals.
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