A method of treating tuberculosis comprising administering an aerosolized interferon such as interferon α, interferon β or interferon γ in a therapeutically effective amount is provided herein. Further, a method of reducing the infectivity of tuberculosis or reducing the number of infectious organisms present in the lungs of a patient suffering from tuberculosis comprising administering an aerosolized interferon such as interferon α, interferon β or interferon γ in a therapeutically effective amount is provided herein. Also, pharmaceutical compositions of one or more aerosolized interferon(s) are provided.
