hi. noted history of liver abscess and drainage thru aspiration twice, and possible recurrence. is your father experiencing any other symptom, such as fever, nausea, vomiting, abdominal pain? it is best if you bring your father to a doctor, preferably a general surgeon, for physical examination and clinical evaluation. an underlying pathology (infective or obstructive) must also be ruled-out. diagnostics (such as ultrasound, blood counts, liver function tests, blood culture, etc.) and management (medical and/or surgical if indications are found) will be directed accordingly. a course of proper antibiotic regimen (IV/oral form), accordingly with the blood and drain culture, must be prescribed. if the symptoms are persistent, it is best to discuss with your doctor, sugical intervention for exploration and drainage of the abscess. hope this helps. good day!! ~dr.kaye