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

The correct choice identifies that "Feeling of sickness/weakness" is not specifically recognized as a distinct sign or symptom of COVID-19 when compared to the other options provided. While individuals with COVID-19 may indeed experience a general sense of malaise or weakness, these feelings are more vague and can be associated with a wide range of illnesses and conditions, making them less definitive for diagnosing COVID-19.

In contrast, the other options are specific physiological indicators that are more strongly associated with severe cases of COVID-19. Persistent pain or pressure in the chest can indicate complications such as pneumonia. The inability to wake or stay awake can signal severe illness and a potential need for immediate medical attention, as it reflects a decrease in alertness during infection. Similarly, pale, grey, or blue-colored skin, lips, or nail beds could suggest a lack of oxygen in the blood, indicating a serious condition that requires urgent care. These symptoms are more indicative of the virus's impact on the body and its functions during an infection.