The examination and evaluation on sera of 206 cases with hydatid disease found in survey scene by different serological methods.

The sera of 206 cases with hydatid disease diagnosed by B-ultrasound and X-ray in survey scene had been examined by Dot-ELISA and IHA with Qinghai cystic hydatid antigen,ELISA With Xingjiang cystic hydatid antigen and Em18-EliB with alveolar hydatid antigen.The results showed that the sero-positive rates were 9037% and 91.98% in these cases with cystic hydatid disease by Dot EliSA and IHA with Qinghai cystic hydatid antigen respectively.The sero-positive rate was 75.94% in same cases by ELISA with Xingjiang cystic hydatid antigen.The sero-positive rates were 77.27% 81.82% and 65.91% in those cases with the whole calcific cystic hydatid disease by above three methods respectively,and the sero-positive rates were lower in whole calcific cystic hydatid than that in other cystic hydatid disease.The sero-negative cases belonged to cystic hydatid disease which located in lungs of livers alone.The results by EM18-ELIB with alveolar hydatid antigen showed that the sero-positive rates were 73.68% and 5.88% in those cases with alveolar hydatid disease and with cystic hydatid disease diagnosed by B-ultrasound and X-ray respectively,and the sero-positive rate was 15.91% in whole calcific cystic hydatid disease.The ratio of the number of positive seras to that of negative seras was 1 to 7 approximately.The value and mean of different serological methods in diagnosis and judge diagnosis for cystic and alveolar hydatid disease had been discussed.