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Infection viral load threshold

Apr 11, 2001

Hi, May I know what's the number of virus particles required to enter the body for an infection to take place? I know this varies, but is there a range?

Response from Dr. Holodniy

I am not sure we can answer that question specifically. We know that in at least one study, that sexual transmission did not occur if a person had a viral load of < 1500/ml of blood plasma. One could extrapolate the potential volume and viral load in genital fluid and potentially come up with a number.

viral load possibility

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