Dr. Holló Ferenc szerk.: Parasitologia Hungarica 3. (Budapest, 1970)

Screening of l.Sz.'s family revealed the worm carrier state of his brother, Cs.Sz. Cs.Sz. (born on October 16th, 1964) was first admitted to the Paediatric Department of Nagykőrös Council Hospital on August 13th, 1969. Admission was suggested to enable a more detailed history to be taken and to permit more careful observation of incidental complaints. The lively, cheerful child was, however, without complaints, and possessed a very good appetite. State at admission

: A slightly under-developed child. Of the laboratory findings only one is worth mentioning, i.e. Tricho'

strongylus infection. Thiabendazole was administered as described earlier. The first treatment was ineffective. Trichostrongylus eggs continued to be found in the faeces. The therapy was later repeated, and proved successful, resulting in' consistently negative parasitological findings. When seeking the source of the infection, Trichostrongylus eggs were demonstrated in the faeces of a cow,living in the environment of the children. Diagnosis Detection of eggs

: Trichostrongylus eggs were detected by a routine flotation method. The egg shell is thin, transparent, and contains 8-16 blastomeres. Eggs of Trichostrongylus spp. cannot definitely be distinguished from those of other Trichostrongylidae (

Ostertagia

, Cooperia

, Haemonchus

). However, they can readily be differentiated from Ancylostoma eggs and from very occasionally occurring Strongyloides eggs, as the former measure 60 x 40

/

<t and contain 4-8 blastomeres while eggs of Stron-