What is the difference between sinusitis and upper respiratory infection

Pneumonia and bronchitis are a few respiratory infections that can be prevented. Learn how to put up your best defense and what to do if you do get sick. Thank you, {{questions}}, for signing up. There was an error. Please try again. The lungs expand and contract to deliver oxygen to the body; they also remove carbon dioxide, a waste gas, from the blood. Bacterial or viral infections can compromise the lungs, leading to respiratory infections. The lungs are responsible. A sinus infection is inflammation in your sinuses — hollow spaces behind your forehead and cheekbones and between your eyes. These infections are common during the winter season, and they cause symptoms like sinus pain, a runny or stuffy no.