How do we know that Person B was infected by Person A, unless Person B went into quarantine directly after interacting with Person A? If they don’t go into quarantine, how do we know that a random Person C didn’t interact with them and cause the infection?
And for the vast majority of infections that can’t be contact traced like the example above, how do we determine the date they were actually infected if the disease can be transmitted asymptomatically?
In: Biology
Well we don’t KNOW for sure that B wasn’t infected by C but we know A and B are both infected, and have both had contact with each other that could have lead to said infection.
Idk if this word math problem is about Corona or STDs, but chances are if A had it and “spent a lot of time” with B, then B has it and statistically got it from A.
As for the second part, with trace back and use timelines in which we know they had contact with those already infected. We know patient A and patient D were in contact 16 days ago, neither had symptoms, but patient A has had symptoms for the past 4 days, and patient D is starting to show symptoms. We can clearly derive from this hypothetical that the asymptomatic period is about two weeks. but Again it’s true that this could be incorrect, but based on probability, this is the strongest lead.
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