Select incorrect statement about viral infections.

• A. Influenza can be treated with antibiotics while COVID-19 cannot.
• B. Common cold is mainly caused by coronaviruses and rhinoviruses.
• C. SARS-CoV-2 and influenza viruses are transmittable through respiratory droplets in the air.
• D. Pneumonia is a common complication from influenza and COVID-19 diseases.

Answer: (A)

Verified step by step guidance

1. Step 1: Understand that viral infections are caused by viruses, and antibiotics are designed to treat bacterial infections, not viral ones.
2. Step 2: Review the statement 'Influenza can be treated with antibiotics while COVID-19 cannot.' Since influenza is caused by a virus, antibiotics are generally ineffective against it; antibiotics may only be used if there is a secondary bacterial infection.
3. Step 3: Examine the other statements: 'Common cold is mainly caused by coronaviruses and rhinoviruses,' which is true because these viruses are common causes of cold symptoms.
4. Step 4: Consider the transmission modes: both SARS-CoV-2 (the virus causing COVID-19) and influenza viruses spread through respiratory droplets, making the statement about their transmission correct.
5. Step 5: Recognize that pneumonia can be a complication of both influenza and COVID-19, so that statement is also correct.