Respiratory Tract Infections: Causes, Symptoms, and Diagnosis
Respiratory Viral Infections: An Overview
Respiratory viral infections are the most common site of infection. Generally, these are mild, yet they carry significant economic impact. Acute respiratory infections (ARI) can occur at any level of the respiratory tract. Pneumonia is the most severe form, as it is potentially lethal and responsible for a large number of deaths.
Why the Respiratory System is Frequently Infected
- It is in direct contact with the environment.
- The environment provides a warm, moist place ideal for microbial growth.
Clinical Respiratory Tract Infections
- Viruses: Major cause of upper respiratory infections and most cases of pharyngitis.
- Bacteria: Primary cause of otitis media, sinusitis, pharyngitis, epiglottitis, bronchitis, and