[Measures and effects of schistosomiasis elimination in Wujin District, Changzhou City]

OBJECTIVE

To understand the measures and effects of schistosomiasis elimination in Wujin District, Changzhou City, so as to provide the reference for other similar areas.

METHODS

The data of schistosomiasis prevention and control were collected and analyzed in Wujin District, Changzhou City from 1995 to 2015.

RESULTS

From 1995 to 2015, the accumulated area for investigating Oncomelania hupensis snail habitats was 15 934.01 hm² in Wujin District, and the accumulated area with snail habitats was 34.61 hm², but no schistosome-infected snails were found. The area of snail control by molluscicides was 234.59 hm², and the area of snail control by environmental reform was 84.48 hm² in 18 key points. There were 259.3 thousand person-times receiving the examinations for schistosomiasis, and there were 17 314 head of livestock receiving the examinations for schistosomiasis, but no schistosome-infected cases were found. There were 204 2 person-times receiving the extensive chemotherapy. The popularizing rate of sanitary toilets was 99.25% in the whole district. The awareness rate of schistosomiasis control knowledge was 98.08% and the formation rate of proper behaviors was 97.82% in the population.

CONCLUSIONS

In Wujin District, the aim of schistosomiasis elimination has been performed through the active control measures. However, there are still social and natural risk factors of re-endemic of schistosomiasis, and therefore, the schistosomiasis monitoring work still should be strengthened.

Clonal T-cell proliferation causing pure red cell aplasia in chronic B-cell lymphocytic leukaemia: successful treatment with cyclosporine following in vitro abrogation of erythroid colony-suppressing activity

Clonal T cells that cause pure red cell aplasia were demonstrated in a patient with chronic B-cell lymphocytic leukaemia. The T-cell fraction was enriched by the immunomagnetic method and shown to have T-cell receptor-beta gene rearrangement. Cryopreserved T cells, obtained during the period of anaemia, suppressed autologous erythroid progenitor cell growth from remission marrow. The colony-suppressing activity was markedly improved by the addition of cyclosporine to the culture medium. The patient achieved haematological remission by cyclosporine monotherapy. Cyclosporine treatment may improve erythropoiesis in both a T-cell-dependent and a T-cell-independent manner.