How do I know if I have the cold, flu, Covid or something else?
The IndependentSign up for our free Health Check email to receive exclusive analysis on the week in health Get our free Health Check email Get our free Health Check email SIGN UP I would like to be emailed about offers, events and updates from The Independent. Symptoms Some symptoms are hard to distinguish among illnesses, especially with respiratory viruses Norovirus is a foodborne illness that can spread through water and contaminated surfaces and can cause vomiting, diarrhea, nausea and stomach pain for about one to three days. The common cold can be caused by several different types of viruses and can cause a runny nose, congestion, cough, sneezing, sore throat, headaches, body aches or low fever for less than a week. The flu, caused by influenza viruses that are always changing, leads to fever, chills, cough, sore throat, runny nose, body aches, headaches and feeling tired. COVID-19 can cause fever, chills, cough, short of breath, sore throat, congestion, loss of smell or taste, fatigue, aches, headache, nausea, or vomiting for several days.