The new coronavirus outbreak has made the headlines in recent weeks, but there’s another viral epidemic hitting countries around the world: flu season. But how do these viruses compare,and which one is really worrisome? So far, the new coronavirus has led to more than 100,000 illnesses and 3,000 deaths worldwide. But that’s nothing compared with the flu,also called influenza. Scientists have studied seasonal flu for decades.So,despite it,we know a lot about flu viruses and what to expect each season. In contrast very little about the new coronavirus and the disease it causes, dubbed COVID-19,because it’s sonew.This means COVID-19 is something of a wild card in terms of how far it will spread and how many deaths it will cause. Both seasonal flu viruses(which include influenza A and influenza B viruses) and COVID-19 are contagious viruses that cause respiratory illness. Typical flu symptoms include fever,cough, sore throat,muscle aches, headaches, runny or stuffy nose, fatigue and sometimes, vomiting and diarrhea according to the CDC. Flu symptoms often come on suddenly. Most people who get the flu will recover in less than two weeks. But in some people, the flu causes complications, including pneumonia. With COVID-19, doctors are still trying to understand the full picture of disease symptoms and severity. Reported symptoms in patients have varied from mild to severe, and can include fever, cough and shortness of breath, according to the CDC. Both the coronavirus and influenza are respiratory illnesses. Both have similar symptoms. Both are contagious. Both can be deadly.