Question

Two directly transmitted viral disease have the same basic reproduction number (r0), even though their dynamics are different. Which of the following differences between the two diseases could lead to the same basic reproduction number?
a. One disease has a higher transmission rate and a longer recovery period than the other.
b. One disease has a lower transmission rate and a longer recovery period than the other.
c. One disease has a lower transmission rate and a shorter recovery period than the other.
d. For one disease, the recovery period is long; for the other, no one recovers.

Answer 1

The difference between the two diseases that could lead to the same basic reproduction number is : One disease has lower transmission rate and a longer recovery period than the other. ( B )

Basic reproduction number ( r0) represents the number of people who gets infected through an infected person, and for a disease to be highly infectious its ( r ) number will have to higher than 1. and The value of r0 is determined based on certain factors which are :

• The Infectious period
• contact rate and mode of transmission

Therefore for the  two viral diseases to have the same basic reproduction number one of the disease will have a lower transmission rate and a longer recovery period than the other

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