Which symptom is NOT associated with rubella?

Rubella, also known as German measles, is primarily characterized by specific symptoms that help in its diagnosis. The classic manifestations include a distinctive rash, postauricular adenopathy (swollen lymph nodes behind the ear), and mild respiratory symptoms such as a sore throat.

The rash that appears during rubella is typically light red and starts on the face before spreading to the rest of the body. Postauricular adenopathy is also a notable feature, often accompanying the characteristic rash. Mild respiratory symptoms such as a sore throat may occur but are not severe.

Persistent cough, however, is not a common or recognized symptom of rubella. While some mild respiratory symptoms may be present, a persistent cough is more commonly associated with other viral infections or respiratory conditions. Therefore, selecting persistent cough as the symptom not associated with rubella is consistent with the clinical understanding of the disease and its typical presentation.