'Idiopathic' edema: two additional points.
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Biomedical subjects
Publications and source records attributed to D Huminer.
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Bacterial infections transmitted by blood or blood products, although rare, remain a serious threat to the recipient of a transfusion. We report on five cases of adverse reactions due to bacterial contamination of blood products, and we review 76 similar cases reported in the English-language literature. Most cases (70%) have been reported from the United States. Various sources of contamination have been suggested, including infection in the donor and invasion of the blood product during the process of collection, preparation, and storage. Frequent clinical manifestations are fever (80%), chills (53%), hypotension (37%), and nausea or vomiting (26%). The overall mortality is 35% (28 of 81 patients). In 38 patients (47%) the adverse reactions have appeared during transfusion; in the others the interval between completion of the transfusion and appearance of symptoms has ranged from 15 minutes to 17 days. A wide spectrum of bacteria have been implicated as causes of adverse reactions, with Pseudomonas species involved in 28% of episodes. Many such reactions are probably misdiagnosed or overlooked, the result being underestimation of the extent of the problem.
In recent years water has been recognized as an important vehicle for extraintestinal infection. A variety of pathogens are acquired through occupational, recreational, and even therapeutic contact with water. The nature of nonenteric waterborne disease is often determined by the ecology of aquatic pathogens. Such infections are of basically two types: superficial, involving damaged or previously intact mucosae and skin; and systemic, often serious infections that may occur in the setting of depressed immunity. A broad spectrum of aquatic organisms, including viruses, bacteria, fungi, algae, and parasites, may invade the host through such extraintestinal routes as the conjunctivae, respiratory mucosae, skin, and genitalia.
A search of the medical literature published since 1950 disclosed 19 cases of probable AIDS reported before the start of the current epidemic. These cases retrospectively met the Centers for Disease Control's surveillance definition of the syndrome and had a clinical course suggestive of AIDS. The reports originated from North America, Western Europe, Africa, and the Middle East. The mean age of patients was 37 years, and the ratio of male to female patients was 1.7:1. Sixteen patients had opportunistic infections(s) without Kaposi's sarcoma. The remainder had disseminated Kaposi's sarcoma. The commonest opportunistic infection was Pneumocystis carinii pneumonia. Two patients were reported to be homosexual. Three others had been living in Africa, and one patient was born in Haiti. In two instances concurrent or subsequent opportunistic infection occurred in family members. All patients died 1 month to 6 years after the initial manifestation of disease. In view of the historical data, unrecognized cases of AIDS appear to have occurred sporadically in the pre-AIDS era.