Detection Coronavirus using Cased-Based Reasoning with Extended Jaccard Coefficient

Coronavirus Disease 2019 or known as COVID-19 is a new disease that can cause respiratory problems and pneumonia. This caused by infection with Severe Acute Respiratory Syndrome Me 2 (SARS-CoV-2). Some of the clinical symptoms appear vary, ranging from such influenza, cough, cold, throat pain, muscle aches, headaches to those serious complications pneumonia sepsis. research build case-based reasoning for early detection looking at characteristics seen in person using Extended Jaccard Coefficient method. The results show method model level similarity case an old case.