Which of the following is NOT a common symptom of COVID-19?

Headaches can occur in individuals infected with COVID-19, but they are not as commonly reported as the other listed symptoms, making them less characteristic of the illness. The hallmark symptoms of COVID-19 primarily include a new and continuous cough, fever, and fatigue, which are more frequently highlighted in health guidelines and studies on the virus.

A new and continuous cough is a classic symptom that prompts individuals to seek testing or medical advice, while fever is a well-documented clinical sign of many viral infections, including COVID-19. Fatigue often accompanies infections and has been commonly reported by patients with COVID-19. Therefore, while headaches can certainly be a symptom, they are less prominent in comparison to the others listed, affirming that they are not as characteristic of COVID-19.