The exsheathment of Necator americanus infective larvae.

Infective 3rd-stage larvae of Necator americanus were treated with human sweat under various conditions, and compared with human serum, 1.5% saline solution, and distilled water. The infective larvae were observed under inverted microscopy.

Methylene blue staining method for identification of Opisthorchis viverrini egg.

Methylene blue staining method was used to distinguish O. viverrini eggs from Haplorchis taichui and Prosthodendrium molenkampi eggs. All eggs were obtained from dissected adult worms, fixed in 10% formalin, and stained with methylene blue prior to light microscopy observation.

Survey of indoor cockroaches in some dwellings in Bangkok.

This study aimed to investigate the species distribution of indoor cockroaches in dwellings in Bangkok. Commercial sticky traps were used to catch cockroaches in 128 private residences (40 single houses, 49 townhouses, 39 apartments), 34 offices, and 30 small groceries. The cockroaches were identified as Periplaneta americana, Supella longipalpa, Blattella germanica, Neostylopyga rhombifolia, P.

Persistence of antibodies in children after intradermal or intramuscular administration of preexposure primary and booster immunizations with purified Vero cell rabies vaccine.

Background: The use of intradermal (i.d.) injections of purified Vero cell rabies vaccine (PVRV) for preexposure prophylaxis has not been well-established.

Maternal practices and risk factors for dehydration from diarrhoea in young children: a case-control study in central Thailand slums.

To determine factors related to dehydration from diarrhoea, we conducted a hospital-based, case-control study in children aged 24 months or younger who had acute watery diarrhoea and attended Chonburi Regional Hospital in central Thailand during November 1988 through May 1989. The study compared 48 cases who had moderate or severe dehydration with 48 controls who had no dehydration. Both cases and controls belonged to low socioeconomic families and were living in urban slum areas.