Trigger points, areas on a patient's body that are tender to touch and feel firm, are indicative of which condition?

  The condition is known as: "fibromyalgia syndrome" ; 
               also called: "FMS" ; or most simply, "fibromyalgia" .
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   The following diagram (attached) represents the "trigger points" of pain in this condition, that are particular painful or sore among palpitation; General, there must be at least 11 (ELEVEN) such "trigger points" out of the 18 shown in the attached image as PART of the diagnosis, according to the American College of Rheumatology, and often if ONE particular "trigger point" exists, the corresponding "trigger point" on the other symmetrical body will occur.   
  However, such "widespread trigger point" is NOT the sole criteria for this condition. Common co-occurring systems including period of impaired cognition/memory,  "fibro fog" ; anxiety and depression, severe sleep disturbances; recurrent migraine and other types of headaches; persistent low-grade fever, recurrent flu-like symptoms, muscle tension, visual and sensory disturbances, cramping aches and pains. 

Making sure the equipment is cleaned daily and insuring proper hygiene is kept up with the working staff.