The insect bite feeling in the urethra or insect crawling feeling in the vagina is a clinical manifestation of STD, so the prevention of this disease is not well understood by many people, resulting in the occurrence of the best time for treatment is delayed, making the condition worse. The actual fact is that you can find a lot of people who have been in the business for a long time. The following let us understand the specific: 1, STDs and AIDS are transmitted through sexual intercourse, rarely caused by other means. In very rare cases, such as the home environment is very dirty, and family members suffer from STDs, while your resistance is very low, you may be infected by non-sexual transmission, but the chance of this is very small. 2, venereal diseases such as syphilis, gonorrhea and other germs, once they leave the body, exposed to the air, will soon die, can no longer be transmitted to others. As for AIDS, it is actually a low-contagious disease that can only be transmitted to others through living cells in the human body. Therefore, daily contact with AIDS patients, such as eating, shaking hands, chatting, etc., will not be infected; even for more intimate actions such as kissing, at least two liters of saliva must be swallowed before the patient may be infected. 3, regardless of the use of STD or AIDS towels, the chance of infection is also not high. As for using a patient’s masturbator, if the device is covered with a lot of the patient’s secretion, and if the device is put in contact with or put into another person’s sexual organ in real time, it is possible to be infected. How to prevent STD? In fact, whether it is STD or AIDS, they and their partners should do enough safety measures, using condoms during sex is one of the measures, in addition, do not have promiscuous sex to avoid transmitting the germs to others, and the patient should see a doctor as soon as possible to seek appropriate treatment.