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Medical Conditions - Respiratory Tract Infections

Respiratory tract infections are a group of illnesses caused by various pathogens, including viruses, bacteria, and sometimes fungi, that affect the respiratory system. These conditions can affect either the upper (common cold, sinusitis) or lower (bronchitis, pneumonia) respiratory tracts. Coughing, sneezing, congestion, fever, and breathing problems are typical symptoms. Depending on the etiological agent and a person's health, respiratory tract infections can range in severity from mild to severe and are frequently spread through respiratory droplets.

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