The common cold is the most common type of respiratory infection, caused by a variety of viruses.

Influenza is caused by a virus, specifically the influenza virus.

Pneumonia typically causes a cough, fever, and shortness of breath.

Pneumonia is typically caused by bacteria, viruses, or fungi. Parasitic pneumonia is not a common type of pneumonia.

Tuberculosis is most commonly caused by Mycobacterium tuberculosis.

Tuberculosis is primarily transmitted through the air when an infected person coughs or sneezes.

HIV infection, diabetes, and smoking are all risk factors for developing tuberculosis.

Bronchiolitis is the most common type of respiratory infection in children, caused by a virus.

Whooping cough is caused by the bacterium Bordetella pertussis.

Whooping cough typically causes a cough, fever, and shortness of breath.

Pneumonia, encephalitis, and myocarditis are all potential complications of whooping cough.

Pneumonia is the most common type of respiratory infection in the elderly.

Streptococcus pneumoniae is the most common cause of pneumonia in the elderly.

Chronic heart disease, chronic lung disease, and diabetes are all risk factors for developing pneumonia in the elderly.

Vaccination, hand hygiene, and respiratory hygiene are all effective ways to prevent respiratory infections.