Final answer:
Cystitis, also known as a urinary tract infection (UTI), is caused by the bacterium Escherichia coli (E. coli). It is not caused by Influenza, Tuberculosis, or Meningitis. Symptoms include pain with urination and frequent urination.
Step-by-step explanation:
Cystitis, also known as a urinary tract infection (UTI), is caused by the bacterium Escherichia coli, commonly known as E. coli. It is not caused by Influenza, Tuberculosis, or Meningitis. Cystitis occurs when bacteria from the lower gastrointestinal tract enter and multiply in the urinary bladder. Symptoms include pain with urination, frequent urination, and the feeling of needing to urinate despite having an empty bladder. Bladder infections are treated primarily with antibiotics.