What is the term for the condition where an individual currently shows symptoms of a disease?

The term that describes a condition where an individual currently shows symptoms of a disease is “ill of infection.” This indicates that the person is actively experiencing the effects of a pathogenic organism, such as bacteria or viruses, and has reached a stage where clinical signs are observable. When someone is "ill," they typically exhibit symptoms that can range from mild to severe, depending on the nature of the infection and the individual's response.

In contrast, the other terms provided describe different stages or states related to infections. "Chronic infection" refers to a long-lasting infection where symptoms may be present but could be mild or intermittent over an extended period. The "incubation period" denotes the time between exposure to the pathogen and the onset of symptoms when the individual is not yet sick, and "asymptomatic" refers to a state where an individual is infected but does not exhibit any symptoms at all. Therefore, "ill of infection" accurately captures the essence of experiencing current symptoms, distinguishing it from these other states of infection.