Men that are not circumcised and do not pull the skin back on his penis when he washes can build up GERMS that can turn into something you might not want to get ,chlamydia is a std that could happen if he is so dirty.
You can get bacterial vaginosis from any infected male partner regardless of circumcision.
No. Bacterial vaginosis is not an std. It is caused by the elimination of the normal vaginal flora, making you susceptible to infection. The most common cause of this is over douching or prolonged use of antibiotics.
There are studies with different results and conclusion about circumcision. Some say that there are no advantages of having circumcision while other prove some benefits. Some studies suggest that uncircumcised men are more prone to develop urinary tract infection.