A sputum culture test helps to diagnose any type of airway infection or other lung-related infections such as tuberculosis.
A Gram stain is a laboratory test that checks for the bacteria at the site of infection. The gram staining process is done easily in the laboratory, and doctors usually use this stain to find out about common bacterial infections.
Leptospirosis is a bacterial infection transmitted to humans through contact with animal urine or by-products.