Zamorano C G, Contreras M C, Espinoza A, Paredes M, Sandoval L, Schulz E, Castillo J
Servicio de Salud Osorno, X Región Chile, Facultad de Medicina, Universidad de Chile, Santiago.
Bol Chil Parasitol. 1994 Jan-Jun;49(1-2):38-42.
An outbreak of trichinosis occurred in Purranque County, X Region, Chile, between october and november of 1992, which involved 36 persons. The incubation period, determined by the clinical picture and laboratory assays, fluctuated between 10 and 12 days. Myalgias (88.9%) and palpebral oedema (86.1%), were the most important symptoms, followed by fever (44.4%) and headache (33.3%). Eosinophils count ranged from two to 42% the first week, and this value raised to 55% the second week of the outbreak. Anti-Trichinella spiralis antibodies were determined by some serological tests such as: precipitin test (PT), bentonite flocculation test (BFT) and indirect hemagglutination test (IHAT) in sera from 28 patients at the beginning of the outbreak. PT was positive in 46.4% of the cases, followed by IHAT (21.4%) and BFT (3.6%). After 15 days, the three tests were performed in sera from 12 patients. At that time, the positivity was elevated in all of them: PT (100.0%), BFT (66.7%) and IHAT (91.7%). It is believed that the outbreak had its origin in infected pork meat that was consumed raw or insufficiently cooked without a previous veterinary inspection.
1992年10月至11月期间，智利X地区的普兰克县爆发了旋毛虫病，涉及36人。根据临床表现和实验室检测确定的潜伏期在10至12天之间波动。肌痛（88.9%）和眼睑水肿（86.1%）是最重要的症状，其次是发热（44.4%）和头痛（33.3%）。第一周嗜酸性粒细胞计数在2%至42%之间，在疫情爆发的第二周该值升至55%。在疫情爆发初期，通过一些血清学检测，如沉淀试验（PT）、膨润土絮凝试验（BFT）和间接血凝试验（IHAT），对28例患者的血清进行了抗旋毛虫抗体检测。PT在46.4%的病例中呈阳性，其次是IHAT（21.4%）和BFT（3.6%）。15天后，对12例患者的血清进行了这三项检测。当时，所有检测的阳性率均有所提高：PT（100.0%）、BFT（66.7%）和IHAT（91.7%）。据信，此次疫情源于未经兽医检查而食用的生的或未充分煮熟的受感染猪肉。
