Abstract
In 2006, the Thailand Ministry of Public Health studied 28 patients from a village in northern Thailand. All had myalgia, edema, fever, and gastrointestinal symptoms; most had eaten wild boar. A muscle biopsy specimen from a patient showed nonencapsulated larvae with a cytochrome oxidase I gene sequence of Trichinella papuae.
Highlights
Outbreak of TrichinellosisSamples were collected from case-patients and controls for complete blood counts and serologic testing
Trichinellosis is a foodborne parasitic zoonosis distributed worldwide that has not always been recognized for its importance, in resource-poor countries (1)
A human gastrocnemius muscle biopsy specimen from a hospitalized case-patient was positive for nonencapsulated Trichinella spp. larvae (Figure 2), which provided a definitive diagnosis of trichinellosis
Summary
Samples were collected from case-patients and controls for complete blood counts and serologic testing. The investigation team collected blood from domestic boar for antibodies to Trichinella spp. and a sample of fermented barking deer meat for larvae examination. Studies were exempted from human subjects review because they were conducted under the authority of the Ministry of Public Health to investigate outbreaks of illness. A successful hunt for barking deer obtained meat that was prepared in various styles, including cooked, raw, and fermented, and was distributed to villagers during April and May. After eating suspected foods on May [20–22], the first case-patient developed symptoms on May 24 (diarrhea and abdominal pain).
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