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KMID : 0377619760300030351
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Korean Jungang Medical Journal
1976 Volume.30 No. 3 p.351 ~ p.362
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Bacterial and Clinical Studies on Vibrio Parahaemolyticus Food Poisoning
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梁學道/Yang, Hak Do
裵丁東/金二鎬/朴長雄/Bae, Jyung Dong/Kim, lee Ho/Park, Jin Woong
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Abstract
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Forty patients with diarrhea aged between 20-50 years were studied over a period of 6 months from May to November, 1975. These patients, according to bacteriological diagnoses, were suffering from V. parahaemolyticus food poisoning. The authors made a study on the biochemical properties, Kanagawa phenomenon (hemolytic activity) on the modified Wagatsuma blood agar plates and sensitivity test to chemotherapeutic agents for isolated strains. Clinical records were briefly summarized as follows:
1. As the Table and Figure one show, diarrhea due to V parahaemolyticus occurs during the period from July to October, with the peak being in August.
2. V. parahaemolyticus from patient with diarrhea, these were 40 cases of diarrheal patients from whom neither know pathogenic bacteria nor chemical agents could be identified. V. parahaemolyticcus was isolated from 10 (25%) of these patients.
(1) Five of these strains(50%) hemolyzed to human erythrocytes in 24 hours,
7.0% in 48 hours, but accounted for 80% hemolyzed to rabbit erythrocytes
in 24 hours, 100% in 48 hours.
(2) Causative foods of V. parahaemolyticus food poisoning were suggested provisionally to be due to the raw fish, shellfish(60%) and pickled vegetable (20%), heated fish, shellfish (20%), respectively. The latter cases suggested, the possibility of infection from these foods were contaminated secondarily by carriers of the organisms or cooking utensils from kitchens of "raw fish and shellfish cooks.
3. Clinical findings of V. parahaemolyticus food poisoning (The resume of major symptoms in 10 cases is shown in Tables 7,8 and Figure 2).
(1). The latent period is supposed to be 5 to 22 hours, 15±2 hours in average.
(2) At the onset of this disease, the majority of cases complained of epigastric
pain (100%), followed by nausea, vomiting and lose of stool. One of the
noticeable clinical symptoms was the remarkable dehydration and prostra￢tion in early stage of illness (watery diarrhea, 8 times within two and a half hours).
(3) Rise of body temperature was seen some hours later.
(4) Every one recovered within two to three days, but in a few cases feeling
of lassitude remained even after a week. No patient succumbed of the
illness.
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