What kinds of lung diseases are contagious?

In the respiratory system diseases, causing infectious diseases, most common is tuberculosis. So in the acute spread stage of tuberculosis, its infectivity will be stronger, if you get tuberculosis, must go to a specialist hospital for active treatment, so tuberculosis will be better cured. Got tuberculosis must be with the surrounding people, family members do a good job of prevention, isolation, to prevent cross infection. Respiratory diseases also include viral infections, such as SARS in 2003, which are also infectious respiratory diseases that require active preventive treatment.