Final answer:
Pneumonia is a lung infection that can be caused by various pathogens including bacteria such as Streptococcus pneumoniae and Legionella pneumophila. Pertussis, caused by Bordetella pertussis, and Tuberculosis, caused by Mycobacterium tuberculosis, are also significant bacterial infections of the respiratory tract. These conditions can lead to severe respiratory issues if not properly managed.
Step-by-step explanation:
Pneumonia is an infectious condition of the lungs that can be caused by a variety of organisms, including bacteria, viruses, and fungi. When discussing pulmonary infections caused by spherical bacteria, conditions such as Bacterial Pneumonia and Pertussis (Whooping Cough) are pertinent. Bacterial pneumonia is marked by inflammation and the filling of the lungs with fluids and white blood cells, impairing air exchange and leading to respiratory distress. Common bacterial causes include Streptococcus pneumoniae and Legionella pneumophila, with the latter causing an atypical pneumonia known as Legionnaires Disease. Pertussis is a highly communicable disease that results in severe coughing and mucus accumulation in the lungs, caused by Bordetella pertussis.
Additional pulmonary infections include Pneumocystis pneumonia, primarily impacting patients with AIDS, and Tuberculosis (TB), caused by Mycobacterium tuberculosis, which may lead to severe respiratory complications if left untreated.