Possible Causes for Legionnaires' Disease in USA

  • Chronic Lymphocytic Leukemia
    Legionnaires' Disease

    The average age of CLL patients is more than 70 years and it should be noted that a complex clinical picture occurs in more than half of the cases due to coexisting diseases. The CLL itself leads to unspecific symptoms such as general malaise and weakness, possibly also to fever, night sweats and weight loss. In…[1]

  • Pneumocystis Carinii Pneumonia
    Legionnaires' Disease

    Pneumocystis carinii pneumonia is a severe form of infection and inflammation of the lungs that primarily affects immunodeficient individuals. Its causative agent pertains to the genus Pneumocystis. The clinical picture presented by PP patients may be dominated by symptoms associated with pneumonia, other…[2]

  • Psittacosis
    Legionnaires' Disease

    Psittacosis is a contagious animal disease bearing the capability of transmission to humans and caused as a result of a Chlamydia psittaci infection. Humans can be infected from parrots, pigeons, ducks, hens, and many other bird species. The incubation period for psittacosis is 1 to 4 weeks. The majority of…[3]

  • Drug-induced Neutropenia
    Legionnaires' Disease

    Drug-induced neutropenia is a potentially life-threatening complication that may be seen after the use of numerous drugs, including antipsychotics, antibiotics, antithyroid agents, but most importantly, chemotherapeutic drugs. Depending on the severity of neutropenia, patients are at a risk for developing various…[4]

  • Diabetes Mellitus
    Legionnaires' Disease

    Diabetes mellitus is a common metabolic disorder of multiple etiology, characterized by chronic hyperglycaemia with disturbances of carbohydrate, fat and protein metabolism due to defects in insulin secretion, insulin action, or both. There are four main types of diabetes mellitus: type 1 diabetes mellitus, type 2…[5]

  • Congestive Heart Failure
    Legionnaires' Disease Whipple Disease

    Congestive heart failure (CHF) or congestive cardiac failure (CCF) refers to chronic, usually biventricular failure of the heart. The patients of congestive cardiac failure present with features of left and right heart failure. The clinical manifestations are as below. Features due to left heart failure: Dyspnea,…[6]

  • Agranulocytosis
    Legionnaires' Disease

    Agranulocytosis is a condition which is characterized by decrease in the neutrophil count below 100/mL of blood. These blood cells play a key role in the elimination of pathogens. Initial signs and symptoms of agranulocytosis include onset of sudden fever accompanied by chills with development of weakness in hands and…[7]

  • Mycoplasma Pneumonia
    Legionnaires' Disease
  • Bacterial Pneumonia
    Legionnaires' Disease

    Persistent cough, and cough with sputum is the most common symptom of bacterial pneumonia. The color of the sputum can help determine the type of pathogen that has caused the infection, for example: rust-colored sputum is due to Streptococcus pneumonia, while if the infection is caused by Pseudomonas,…[8]

  • Acquired Immunodeficiency Syndrome
    Legionnaires' Disease

    Acquired immunodeficiency syndrome (AIDS) is considered to be the most severe stage of human immunodeficiency virus (HIV) infection. It is life-threatening if therapy is not initiated immediately. Patients present with constitutional symptoms of variable severity, wasting, and numerous AIDS-defining illnesses. Clinical…[9]

Legionnaires' Disease

Legionnaires' disease is a type of pneumonia caused by Legionella pneumophila, which was first identified in July 1976, when an outbreak occurred among people attending the 58th annual convention of the American Legion in Philadelphia.

Further symptoms

Similar symptoms


  1. Chronic Lymphocytic Leukemia, Symptoma
  2. Pneumocystis Carinii Pneumonia, Symptoma
  3. Psittacosis, Symptoma
  4. Drug-induced Neutropenia, Symptoma
  5. Diabetes Mellitus, Symptoma
  6. Congestive Heart Failure, Symptoma
  7. Agranulocytosis, Symptoma
  8. Bacterial Pneumonia, Symptoma
  9. Acquired Immunodeficiency Syndrome, Symptoma