Safe sex practices reduce your risk of getting an STI. These practices include using a condom or dental dam during sexual intercourse or oral sex and cleaning sex toys between users. Even when using a condom, not all STIs can be completely prevented. STIs such as chlamydia, gonorrhoea, trichomoniasis, and mycoplasma genitalium can be prevented using condoms or dental dams during sex. Genital warts, syphilis, and herpes can enter your body through your skin. Pubic lice or scabies can also be transmitted through skin-to-skin contact or pubic hair. Using a condom or dental dam will not always protect against these STIs if the affected area is not covered by a condom. HIV, syphilis, and Hepatitis B and C are transmissible through blood. This means that in order to become infected, body fluids such as blood, vaginal fluids, semen, or breast milk that contain the virus must enter the bloodstream. This can happen in various ways, such as through open sores, needle stick injuries, sharing needles, pregnancy and childbirth, or tears in the skin that occur during sexual contact. One cannot catch hepatitis or HIV through activities like hugging, sharing eating utensils, or sneezing/coughing. HIV can be avoided by using PReP before potential exposure, or PEP after being exposed. Hepatitis B can be prevented through vaccination. Men who have sex with men, sex workers, and children born after January 1, 2011 can get vaccinated against Hepatitis B for free in the Netherlands. If you have symptoms that could be an STI or if you have had sex with someone who has an STI, be sure to get tested. You should get tested even if you had sex with a condom.