Upper respiratory infections are, at best, frustrating and painful and, at worst, serious illnesses that can land people in the hospital for extended periods. This guide will help you understand what these infections are, what can cause them, and what treatments are available. What are upper respiratory infections? Upper respiratory infections are usually bacterial, but sometimes viral, infections that impact the respiratory region, including the larynx, the nasal cavity, nostrils, the pharynx, or the lungs ...
