Can a vaginal bacterial infection be caused from your spouse having intercourse with other women?

Well that just sucks if you spouse is cheating on you. Go tie him down on a bed and force him to have really fun, long sex. That is if you love him.
Bacterial infections, such as bacterial vaginosis also called BV, have nothing to do with a woman being "nasty" or dirty, and it does not necessarily relate to a couple's fidelity. BV can be transmitted through sexual activity with another partner or item, or it can randomly occur due to an imbalance of the bacterial flora in the vagina, similar to how a yeast infection may occur.
Check out the links to CDC (Center for Disease Control)found on Answers.com

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I think woman can get bacterial infections from their spouse having sexual intercourse with other women. the reason i think this is because if your spouse were to have sex with a "nasty" woman come home to you and not wash up, then have sex with you then bam you got it. because he just crossed whatever the other woman had straight to you.  

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Bacterial infections can come from ALL kinds of things. It's possible, but there are other things that upset the balance of nature in the vagina all too quickly and more often then most know. Such as not wiping from front to back, douching too much. More women have bacterial infections and don't know it then you know. Refer to the link to the right, it's very informative:)  

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Although Bacterial Vaginosis is not considered to be a sexually transmitted disease, it is seldom seen in monogomous relationships. The risk factors for this infection are IUD's, multiple sexual partners, and Sexually Transmitted Diseases.
While I think the above scenario is quite possible, I think men also "harbor" these infections unknowlingly. They come in contact with the bacterial vaginosis and they themselves carry the bacteria. They are asymptomatic and never realize that they keep passing the disease on. So it may have been a partner they had months or years before you that they caught from because they never were treated themselves. I work in a health clinic and we had over a 2-3 year time period women who kept coming in with various STD's including BV. When we had to send notices out to the other person to be treated more often times than not it was this one particular man. He finally did come in and said he was not infected/sick. When tested he did have NGU which is what he was passing on to these women. He insisted he had no disease and refused treatment. So he is still out there passing it on to other wom
Sure you can have STD. You can aquire bacterial sexually transmitted illness including Chlamidia trachomatis, w/c may give you to nasty illnesses PID and LGV.

Answer: There are a lot of ways a women can get an infection in the vagina.
It can be irritaion,itching,burning and smelly vaginal discharge problems etc...
Bacterial Vaginosis is one of the conditions that cause a bacterial infection in women. BV infection is common in pregnant women and sex activity women that are making an unprotected sex life.