Respiratory infections are caused by different microorganisms such as viruses and bacteria and affects the nose, throat and respiratory tract.
The pulmonologist is a medical specialist in respiratory diseases.
A doctor or family doctor is responsible for diagnosing and prescribing medical treatments to patients. The family doctor refers to patients where a specialist when a specific treatment is required.
Remember that for the proper selection of health professional that treats respiratory infections you must consider the nature, severity and symptoms you are presenting.