Greetings,
Streptococcal infections of the vagina can be contracted through any contact (including sexual). It frequently colonizes without symptoms other areas of the body (for example the nares, throat, mouth or even the skin) and can spread to the same person or from one person to the next. It is not possible to say whether it was contracted during intercourse but it is possible.
Sincerely,
Dr.Bernon
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