• Taenia Infection
  • Tapeworm Infection [Taenia Infection]
  • TB (Tuberculosis)
  • TBI (Traumatic Brain Injury)
  • Tetanus (Lockjaw) Infection
  • Thoracic Aortic Aneurysm
  • Thrombosis
  • Thrush [Oropharyngeal Candidiasis]
  • Ticks
  • Tinea — see Ringworm
  • Tobacco Use, Smoking and — see Smoking and Tobacco Use
  • Tourette Syndrome (TS)
  • Toxocara Infection
  • Toxocariasis [Toxocara Infection]
  • Toxoplasmosis [Toxoplasma Infection]
  • Trachoma Infection
  • Transmissible spongiform encephalopathies  [Prion Diseases]
  • Trench fever [Bartonella quintana Infection]
  • Treponema pallidum Infection
  • Trichomoniasis [Trichomonas Infection]
  • Trichuriasis
  • Trisomy 21  [Down Syndrome]
  • Trypanosoma cruzi Infection [Chagas Disease]
  • Trypanosomiasis, African  [Sleeping Sickness]
  • Tularemia [Francisella tularensis Infection]
  • Typhoid Fever [Salmonella typhi infection]
  • Typhus Fevers