Human Outbreak of Trichinellosis Caused by Trichinella papuae Nematodes, Central Kampong Thom Province, Cambodia.

Emerging Infectious Diseases
Yannick CaronHélène Yera

Abstract

In September 2017, a severe trichinellosis outbreak occurred in Cambodia after persons consumed raw wild pig meat; 33 persons were infected and 8 died. We collected and analyzed the medical records for 25 patients. Clinical signs and symptoms included myalgia, facial or peripheral edema, asthenia, and fever. We observed increased levels of creatine phosphokinase and aspartate aminotransferase-, as well as eosinophilia. Histopathologic examination of muscle biopsy specimens showed nonencapsulated Trichinella larvae. A Trichinella excretory/secretory antigen ELISA identified Trichinella IgM and IgG. Biopsy samples were digested and larvae were isolated and counted. PCR for the 5S rDNA intergenic spacer region and a multiplex PCR, followed by sequencing identified the parasite as Trichinella papuae. This species was identified in Papua New Guinea during 1999 and in several outbreaks in humans in Thailand. Thus, we identified T. papuae nematodes in humans in Cambodia.

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Citations

May 8, 2021·Zoonoses and Public Health·Hellen Espinoza-RojasCarlos Landaeta-Aqueveque
May 28, 2021·Parasites & Vectors·Carlos Landaeta-AquevequeMauricio Canals
Jul 3, 2021·Tropical Medicine and Infectious Disease·Rebecca SöderbergGunilla Ström Hallenberg

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Methods Mentioned

BETA
ELISA
PCR
electrophoresis
biopsy
biopsies

Software Mentioned

BLASTn

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