Forensically important fly maggots in a floating corpse: the first case report in Thailand.

The authors report herein the entomological evidence from the first documented forensic floating corpse in Thailand. The male remains of unknown name and age was found in the waterside of a reservoir in Lampang province, northern Thailand. Approximately 13-16 wounds resulting from sharp-edged material were found on the body. Numerous third-instar of blowflies Chrysomya megacephala (F) and Chrysomya rufifacies Macquart (Diptera: Calliphoridae) were collected, and the entomological evidence of the latter species could be used to estimate approximately 7 days of the postmortem interval. This is the first report of C. megacephala as forensic important fly species in Thailand. Additional research is needed to ascertain the effects of water on the succession and development of both fly species subsequently coming to associate with a corpse so treated in Thailand.

Evaluation of the formalin-Tween concentration technique for parasitic detection

O método de detecção de parasitas por meio de sedimentação com Tween 20Õ foi comparado com o de formalina-éter. De um total de 297 amostras fecais examinadas, 72,1 por cento foram positivas. A técnica de formalina-Tween foi eficaz para demonstrar a presença de helmintos, particularmente ovos de Ascaris lumbricoides, Trichuris trichiura e ancilostomídeos. Entretanto, foi menos capaz de revelar protozoários. Este método é simples, de rápida execução e altamente sensível; revela infecções por parasitas, especialmente por meio da identificação de ovos de helmintos.