190.4 📌 章末速蚘

  • C. trachomatis — obligate intracellular, EB/RB lifecycle, energy parasite
  • 15 serotypes: A-C trachoma, D-K genital/neonatal, L1-L3 LGV
  • Treatment 2021 CDC: doxycycline 100 bid × 7d (preferred); azithro 1 g × 1 (pregnancy)
  • LGV: doxy × 21d; MSM proctitis (L2b)
  • PID: ceftriaxone + doxy + metro; infertility consequence
  • Fitz-Hugh-Curtis: perihepatitis (chlamydia or gonorrhea)
  • Reactive arthritis: HLA-B27, post-STD
  • Neonatal: conjunctivitis (5-12d) + pneumonia (2-12 wk); erythromycin 14d
  • Trachoma: A-C serotypes, leading infectious blindness; SAFE strategy, WHO elimination 2030
  • Co-screen HIV + syphilis + gonorrhea + HBV; re-screen 3 mo
  • Doxy-PEP 2024: 200 mg PO within 72 hr (MSM), reduces 70%