title: Studies on humans exposed to airborne sewage sludge.
abstract: A clinical investigation was made among workers in a sewage treatment plant and age matched controls not exposed to sewage. Acute incidences of fever and eye symptoms were found in about 50% of  the exposed population. Serum immunoglobulins, white blood cells and thrombocytes were elevated in the exposed group. A higher percentage of increased levels of C-reactive protein and fibrinogen degradation products was found in the exposed group. Although no definite cause-effect relationship can be established the responsible agent in the environment could well be endotoxins.
mesh_terms: D000397:Air Pollution; D002097:C-Reactive Protein / Q000032:analysis; D005132:Eye Manifestations / Q000209:etiology; D005334:Fever / Q000209:etiology; D005338:Fibrin Fibrinogen Degradation Products / Q000032:analysis; D006801:Humans; D007136:Immunoglobulins / Q000032:analysis; D007964:Leukocytosis / Q000209:etiology; D009784:Occupational Diseases / Q000473:pathology*; D012722:Sewage; D012877:Skin Manifestations; D013922:Thrombocytosis / Q000209:etiology
chemical_list: D005338:Fibrin Fibrinogen Degradation Products; D007136:Immunoglobulins; D012722:Sewage; D002097:C-Reactive Protein