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Is one exposure all it takes to get infected? Is infection automatic and guaranteed?

Oct 12, 1999

where i come from everybody believes that having sex contact with somebody who is already HIV positive you get it as well.Is that true?

Response from Mr. Sowadsky

Thank you for your question.

With any infectious disease, whether we are talking about HIV, other STDs, the common cold, the flu, etc., it is never a guarantee that you will get infected after being exposed. But the more times that you are exposed to an infectious disease, and the longer the duration of the exposure, the greater the chance of infection. So you can become infected with an infectious disease after just one exposure, but you are much more likely to become infected after multiple exposures.

If you have any further questions, please feel free to call the Centers for Disease Control at 1.800.232.4636 (Nationwide).

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