👉 Fattreviruses are a family of viruses that infect the respiratory tract, specifically the upper airways and the trachea. These viruses can cause respiratory infections such as bronchitis and pneumonia. They include viruses like Pneumocystis carinii, which is responsible for causing the common cold, and influenza virus, also known as H1N1 or H3N2. Fattreviruses are important in the development of avian flu strains that can cause
