Objective　To timely understand the current status and distribution of nail snails (Oncomelania hupensis) in Tongjiang River channels in Zhenjiang City, providing a scientific basis for achieving the goal of eliminating schistosomiasis. Methods　From 2019 to 2023, nine Tongjiang River channels on the south bank of the Yangtze River under the jurisdiction of Zhenjiang City were selected as the monitoring area. Snail monitoring was carried out onshore and beach nail snails floats in the Tongjiang River channels, nail snails on attachments in hardened areas, snails induced by straw curtains, and snails carried by boats and domestic animals. Results　The monitoring results of shoreline snail from 2019 to 2023 showed that the snail situation in the Tongjiang River channel and its outer river bank remained relatively stable from 2019 to 2020; however, in 2021, under the influence of the Yangtze River flooding disaster in 2020, the area of snails increased significantly. In 2021, the area with snails in the Tongjiang River channel and the outer river bank increased by 45.70% (11.95/26.15) and 100.00% (20.00/20.00) compared to 2020; the average density of nails snails in the Tongjiang River channel and the outer river bank and the emergence rate of snail frames both showed a significant increase, rising by 94.73% (0.18/0.19) and 68.08% (8.68/12.75) compared to 2020, and by 122.73% (0.81/0.66) and 102.78% (43.26/42.09), respectively. The differences in the increase in the occurrence rate of spiked frames in the Tongjiang River channel Chili River and Renmin River were not statistically significant (χ2=0.329, P>0.05; χ2=0.646, P>0.05). From 2022 to 2023, the density of nail snails and the occurrence rate of framed snails in the Tongjiang River channel showed a decreasing trend (F=4.72, P=0.04 and χ2=372.58, P<0.01). The area of nail snails, density of live snails, and occurrence rate of framed snails in the outer river bank showed a decreasing trend (F=13.96, P=0.02; F=23.43, P<0.01; χ2=1 029.69, P<0.01). During the five years, no nail snails were detected in the ancient canal and 11 tributaries. From 2019 to 2023, 180 times of 3 003 kg of floating objects were salvaged, with a total of 148 live snails detected. A total of 17 live snails were captured on attachments in the hardened berm area; a total of 11 live snails were captured by straw curtain snail baiting;112 boats were inspected, and no snails were found; there were 112 boats surveyed, and no snails were found; 97 cattle were observed, and 2 cattle were found to carry 1 live snail on their hooves; 321 sheep were observed, and no snails were found on their hooves; and no infectious snails were found in the monitoring area in 5 years. Conclusions　Nail snails continue to exist in the Tongjiang River channel, and the risk factors for schistosomiasis transmission have not been completely eliminated. It is still necessary to carry out accurate monitoring of the snail situation in the Tongjiang River and the river bank, so as to grasp the risk of transmission in time and take emergency measures.

Objective To evaluate the molluscicidal effect of spraying 5% niclosamide ethanolamine salt granules with drones against of Oncomelania hupensis snails in snail habitats in marshland areas. Methods From September to October, 2022, marshlands were sampled from Dantu District, Zhenjiang City, Jiangsu Province as study areas, and assigned into four groups, of approximately 3 000 m² per group. In Group A, environmental cleaning was performed, followed by spraying 5% niclosamide ethanolamine salt granules with knapsack sprayers at a dose of 40 g/m², and in Group B, 5% niclosamide ethanolamine salt granules were sprayed with knapsack sprayers at a dose of 40 g/m² without environmental cleaning, while in Group C, environmental cleaning was conducted, followed by spraying 5% niclosamide ethanolamine salt granules with drones at a dose of 40 g/m², and in Group D, 5% niclosamide ethanolamine salt granules were sprayed with drones at a dose of 40 g/m² without environmental cleaning. Then, the study areas in each group were equally divided into six blocks, with Block 1 for baseline surveys and blocks 2 to 6 for snail surveys 1, 3, 5, 7, 14 days following chemical treatment. The mortality of snails and the reduction of the density of living snails were calculated. Results A total of 132 frames were surveyed during the period from September to October 2022, and the occurrence of frames with living snails and means density of living snails were 61.36% (81/132) and 1.58 snails/0.1 m², respectively. The overall mortality rates of snails were 43.02% (77/179), 38.69% (77/199), 47.78% (86/180) and 31.02% (58/187) 14 days following chemical treatment in groups A, B, C and D, respectively (χ² = 11.646, P < 0.05), and there were differences detected in the snail mortality between group A and D, and between groups C and D (both P_adjusted values < 0.05). The adjusted mortality rates of snails were 37.42%, 36.07%, 38.85% and 40.40% in groups A, B, C and D 14 days post-treatment, and the density of living snails decreased by 48.10%, 63.29%, 67.09% and 69.62% 14 days post-treatment relative to pre-treatment, respectively. Conclusions Chemical treatment with drones is feasible for O. hupensis snail control in marshland areas; however, the molluscicidal effect of spraying 5% niclosamide ethanolamine salt granules with drones is comparable to spraying chemicals manually in marshland areas regardless of environmental cleaning.

Objective To evaluate the effective e measures of the prevention and treatment of venous thrombosis in hospital and evaluate the effect of"antibolt work"in patients with multidisciplinary cooperation. Methods Compare the level of venous thromboembolism (VTE) incidence, average hospital day, patient satisfaction and the level of knowledge of medical staff in the high risk department of VTE. Results After intervention in high-risk departments staff VTE related knowledge level improved, 2013 high- risk departments medical staff about the basic knowledge, risk assessment, VTE prevention knowledge of three dimensional awareness were 34.7％ (26/75), 49.3％ (37/75), 32.0％ (24/75), respectively, 2016 were 56.0％(42/75), 69.3％(52/75), 90.7％(68/75), respectively, two groups compare the difference was statistically significant (χ2=6.887, 6.217, 54.423, P<0.01 or 0.05). Reduced incidence of VTE 2 groups, 2013 annual incidence of deep venous thrombosis (DVT) and pulmonary embolism (PE) were 31.7％ (38/120), 11.7％ (14/120), respectively, in 2016 the annual incidence of DVT and PE were 14.2％(17/120), 4.2％(5/120), respectively, two groups compare the difference was statistically significant (χ2 =10.402, 4.630, P<0.01 or 0.05). VTE in 2016 patients with high-risk departments the average hospitalization time significantly below 2013, 2013 was (18.3 ± 3.5) days while 2016 was (12.7 ± 2.9 )days, two groups compare the difference was statistically significant (t = 13.496, P < 0.01). In 2016, the satisfaction rate of patients with VTE was higher than that in 2013, 77.5％(93/120) in 2013, 90.8％(109/120) in 2016, and the difference between the two groups was statistically significant (χ2=8.004, P=0.005). Conclusion The prevention and control of venous thrombosis based on multi-disciplinary integration is effective in preventing the occurrence of thrombosis in hospitalized patients and is worthy of clinical promotion.

Objective To investigate and analyze the influence of psychological intervention on the compliance of patients with hepatitis B treated with pegylated interferon alpha 2a. Methods 100 patients with hepatitis B treated in our hospital from April 2014 to October 2016 were selected and randomly divided into the control group and the experimental group, with 50 patients in each group. The experimental group and the control group patients were treated with pegylated interferon alpha 2a treatment, treatment time was 48 weeks, no other antiviral therapy. The control group was given routine care, and the experimental group was given psychological intervention on the basis of the control group. The treatment compliance of the two groups was compared and analyzed. Results After the corresponding treatment, the score of mental health in the experimental group was (9.94±2.01) points, and the score of mental health in the control group was (6.41±2.27) points. The scores of mental health in the control group were significantly lower than those in the experimental group, with statistical difference (P<0.05). Among the patients in the experimental group, three patients had poor compliance, 20 patients had good compliance, and 27 patients had good treatment compliance, and the compliance rate was 94%. Among the patients in the control group, 15 patients had poor compliance and the rate of compliance was 70%. The rate of good treatment compliance in the control group (70%) was significantly higher than that in the experimental group (94%), with statistical difference (P<0.05). Conclusion Ppsychological intervention can significantly improve the treatment compliance of pegylated interferon alpha 2a in patients with hepatitis B, and improve the quality of life of patients, so it has the clinical significance of further promotion and application.

Objective To describe the growth and development of Schistosoma japonicum in goat and the intensity and tem?poral distribution of eggs excreted by goat feces,so as to provide baseline data for the control and elimination of the role of goat in the transmission of schistosomiasis. Methods The goat animal models of schistosomiasis were established,and stool sam?ples were collected for parasitological examinations. The number of adult worms recovered,variation of schistosomes in goat at different time points post?infection,number of eggs in schistosomes,variation in number and temporal profiles of eggs excreted from goat feces were observed. Results Of the 6 schistosome?infected goat,415 adult worms were recovered,with a mean adult worm recovery of 34.58%(range,23.00%to 45.50%). Among the 5 goat infected with 200 cercariae each,47,93,77, 74 and 73 adult worms were recovered 2,5,8,11 and 14 months post?infection,respectively. There were(200.00 ± 42.33), (226.20±45.88),(168.20±25.85),(183.80±55.13)and(190.80±53.53)eggs detected in female schistosomes. The mean pre?patent period of eggs excreted by 10 infected goat was(37.7±3.02)d. From 2 to 14 months post?infection,7 batches of goat fe?ces were hatched,and there were 30,23,14,1 and 2 times for miracidium intensity of“++++”,“+++”,“++”,“+”and“-”, respectively,with 42.86%,32.86%,20.00%,1.43%and 2.86%constituent ratios of miracidium intensity. Conclusions Ap?proximately 1/3 S. japonicum cercariae may develop to adults in goats post?infection,and the prepatent period of eggs is(37.7± 3.02)d. There is no remarkable decrease seen in the number of adult worms,eggs in female schistosomes and eggs in goat feces within 14 months post?infection. Our findings suggest a long duration for infected goat in the transmission of schistosomiasis ,and there is no evidence to prove the“self?cure”phenomenon in goat,indicating that goat is an important source of infection for schistosomiasis japonica.