What is a key feature of viral infections compared to bacterial infections?

A key feature of viral infections is that they may resolve without treatment. This aspect distinguishes them from bacterial infections, which typically require antibiotic intervention to eliminate the bacteria causing the illness. Many viral infections, such as the common cold or certain cases of influenza, often run their course and improve on their own without the need for medical treatment. The immune system is usually capable of fighting off viral infections after a period of time.

In contrast, bacterial infections often lead to complications if left untreated and usually necessitate medical intervention. While some viral infections can cause significant illness, many will resolve spontaneously as the body’s immune response takes over.

The other options do not accurately reflect the characteristics of viral infections. For instance, antibiotics are effective against bacteria, not viruses, which makes the statement about treatment using antibiotics incorrect. Elevated white blood cell counts are more commonly associated with bacterial infections, as they indicate an immune response to the presence of bacteria. Fever is a common symptom in both types of infections, but it is not universally present in every case of viral infection, making it an unreliable distinguishing feature.