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性传播疾病(sexually transmitted diseases,STD)是指由性行为引起的生殖器间或生殖器外接触传染的一组疾病。世界卫生组织(WHO)规定20余种病原体感染属STD范畴,其中较常见的是衣原体(chlamydia trachomatis,CT)和支原体(ureaplasma)感染引起的STD,常称为非淋菌性尿道炎(nongon
Sexually transmitted diseases (STDs) refer to a group of diseases transmitted by genital or extra-genital contact caused by sexual activity. More than 20 pathogens are classified as STDs by the World Health Organization (WHO). The more common are STDs caused by chlamydia trachomatis (CT) and ureaplasma infections, often referred to as nongon