Flu vs COVID-19 vs Dengue: How to Tell the Symptoms Apart

Flu, COVID-19 and dengue can all start with fever, headache and general fatigue, which is why many people confuse them. This article explains the key differences as general health awareness, and it does not replace a medical examination.

Influenza (Flu)

Flu usually comes on suddenly. Its main symptoms are high fever with chills, muscle and joint aches, cough and a sore throat. It typically improves within about a week with rest and fluids.

COVID-19

COVID-19 can look similar to flu, with fever, cough and tiredness. Its most distinctive feature is the loss of smell or taste. Breathing difficulty or digestive symptoms may also occur. How long it lasts and how severe it is varies from person to person.

Dengue Fever

Dengue spreads through the bite of an infected mosquito. It starts with a high fever, severe headache, pain behind the eyes, strong muscle and joint pain, and sometimes a skin rash. The most important thing to know is that it can lead to serious complications if ignored, such as bleeding or a sharp drop in platelets.

When Should You See a Doctor?

See a doctor promptly if the fever lasts more than two or three days, if you have difficulty breathing, bleeding, or severe abdominal pain. A doctor is the one who can confirm the diagnosis and recommend the right treatment for you.