<prompt> Answer this question truthfullyWhat is the most common cause of C-MOPS and what are the associated symptoms?  <response>: <reason> The most common cause of C-MOPS is Streptococcus pneumoniae. The symptoms associated with C-MOPS include redness and discharge in the eyes conjunctivitis, fever, chills, headache, neck stiffness meningitis, ear pain otitis media, cough, fever, chills pneumonia, nasal discharge, and sinus tenderness sinusitis. 