American Lung Association indicates pneumonia is a lung infection caused by bacteria, fungi and viruses. The condition is not a single disease and has more than 30 different causes. Influenza is the most common cause of ... More » Health Conditions & Diseases

The bacterial Streptococcus pneumonia causes most of the cases of bacterial pneumonia in the United States, according to Mayo Clinic. Bacteria-like organisms, virus and fungi also cause pneumonia. In addition, food, drin... More » Health Conditions & Diseases

Individuals contract pneumonia when their noses and airways or immune systems fail to filter germs and those germs enter and infect the lungs. The American Lung Association points out that pneumonia is not a single disea... More » Health Conditions & Diseases

Pneumonia is a lung infection often caused by viruses or bacteria, according to the American Lung Association. People with weakened immune systems or pre-existing respiratory diseases have the highest risk of contracting... More » Health Conditions & Diseases

Interstitial pneumonia is a type of lung disease caused by fungi, bacteria or viruses infecting the lung's interstitial, according to WebMD. Other possible causes of this disease include autoimmune diseases, radiation tr... More » Health Pain & Symptoms

The causes of pinkeye include bacteria and viruses, allergies, and irritation due to chemicals and foreign objects, says Mayo Clinic. A blocked tear duct can cause pinkeye among the newborn babies. More » Health Conditions & Diseases

The Mayo Clinic states that viruses and bacteria cause most cases of spinal meningitis. In rare cases, fungi, chemical reactions, inflammatory diseases, cancer and drug allergies cause the condition. More » Health Conditions & Diseases