| Pierre Dorny | 3 Articles |
In Vietnam, only few cases of cystic echinococcosis have been reported up to now. We report on the first case of cystic echinococcosis involving the central nervous system reported in Vietnam. Our patient, a 14-year-old child, presented with symptoms of headache and progressive tremor in the right hand that had lasted for 1 month and had worsened in the last days before admission. Following the demonstration of a large space occupying brain cyst by computed tomography, a presumptive diagnosis of a brain tumour was made, that was later overruled. Magnetic resonance imaging, a biopsy and serological analysis allowed for the diagnosis of a giant hydatid brain cyst. The patient underwent surgical removal of the cyst and was treated for 6 months post-surgery with albendazole. On follow-up, the clinical symptoms gradually improved, serology became negative and 1.5 years after the surgical intervention the patient was declared to be cured. This case highlights the importance of considering hydatid disease in differential diagnoses, even in regions where Echinococcus infections are considered rare.
Following the first report of Opisthorchis viverrini infection in a domestic duck in Phu My District of Binh Dinh Province, Central Vietnam, many other cases were observed in the province. We determined the infection rate and intensity of O. viverrini infection in ducks in 4 districts of the province. A total of 178 ducks were randomly selected from 34 farms for examination of flukes in the liver and gall bladder. An infection rate of 34.3% (range 20.7-40.4% among districts) was found; the intensity of infection was 13.8 worms per infected duck (range 1-100). These findings show the role of ducks as a host for O. viverrini, duck genotype, which is sympatric with the human O. viverrini genotype in this province. It also stresses the need for investigations on the zoonotic potential and the life cycle of this parasite.
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The prevalence and associated risk factors of Toxocara vitulorum infection in buffalo and cattle calves was studied in 3 provinces in central Cambodia. Fecal samples were collected from 517 calves between the age of 1-15 weeks and processed for nematode egg counts by a modified McMaster method. A total of 64 calves were found to excrete T. vitulorum eggs in their feces (12.4%; 95% exact CI: 9.7-15.5). The mean fecal egg count was 2,798 EPG (SD=16,351; range=0-224,400). A multivariable generalized linear mixed model showed higher odds of T. vitulorum infection for buffalo versus cattle, for animals aged 4-8 weeks versus younger and older ones, and for animals with strongyle infection. There was no association with fecal consistency. Farmers should be aware of the potential impact of T. vitulorum, and treat their calves at the age of 2-3 weeks with anthelmintics such as benzimidazoles or pyrantel.
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