Objective:To investigate the epidemic characteristics of imported malaria in Dezhou City, Shandong Province.Methods:The epidemic data of imported malaria in Dezhou City from January 2014 to December 2024 reported by the China Disease Prevention and Control Information System and the Parasitic Disease Prevention and Control Information Management System were collected, and the sources of infection and epidemiological characteristics of the cases were analyzed. Meanwhile, the surveillance data of malaria vector populations in Dezhou City reported by the China Disease Control and Prevention Information System during the same period were collected, and the types of mosquito populations were analyzed.Results:From 2014 to 2024, a total of 100 cases of imported malaria were reported in Dezhou City, all of which were laboratory-confirmed cases, mainly falciparum malaria, accounting for 61.0% (61/100). The cases came from 21 countries, mainly imported from Africa, accounting for 99.0% (99/100). The cases were mainly male, accounting for 99.0% (99/100). The age range was mainly between 21 and 50 years old, accounting for 88.0% (88/100). The occupations were mainly construction industry workers and catering industry personnel, accounting for 41.0% (41/100) and 27.0% (27/100), respectively. The median time interval between the entry of the case and the onset of the disease was 8 days, and the median time interval between the onset of the disease and diagnosis was 6 days. From 2014 to 2024, a total of 16 803 mosquitoes were captured in Dezhou City, with the dominant mosquito species being Culex pipiens pallens, accounting for 89.1% (14 979/16 803). Conclusion:The imported malaria in Dezhou City is mainly falciparum malaria imported from Africa, and the cases are mainly male, young and middle-aged people and construction industry workers.

Objective:To investigate the epidemic characteristics of imported malaria in Dezhou City, Shandong Province.Methods:The epidemic data of imported malaria in Dezhou City from January 2014 to December 2024 reported by the China Disease Prevention and Control Information System and the Parasitic Disease Prevention and Control Information Management System were collected, and the sources of infection and epidemiological characteristics of the cases were analyzed. Meanwhile, the surveillance data of malaria vector populations in Dezhou City reported by the China Disease Control and Prevention Information System during the same period were collected, and the types of mosquito populations were analyzed.Results:From 2014 to 2024, a total of 100 cases of imported malaria were reported in Dezhou City, all of which were laboratory-confirmed cases, mainly falciparum malaria, accounting for 61.0% (61/100). The cases came from 21 countries, mainly imported from Africa, accounting for 99.0% (99/100). The cases were mainly male, accounting for 99.0% (99/100). The age range was mainly between 21 and 50 years old, accounting for 88.0% (88/100). The occupations were mainly construction industry workers and catering industry personnel, accounting for 41.0% (41/100) and 27.0% (27/100), respectively. The median time interval between the entry of the case and the onset of the disease was 8 days, and the median time interval between the onset of the disease and diagnosis was 6 days. From 2014 to 2024, a total of 16 803 mosquitoes were captured in Dezhou City, with the dominant mosquito species being Culex pipiens pallens, accounting for 89.1% (14 979/16 803). Conclusion:The imported malaria in Dezhou City is mainly falciparum malaria imported from Africa, and the cases are mainly male, young and middle-aged people and construction industry workers.

Objective To analyze the occupational characteristics in patients with avascular necrosis of femoral head and related factors.Methods A random sample of 1062 patients with avascular necrosis of femoral head of inpatient medical record data from 2007 to 2008 was selected, all patients were confirmed by X-ray, CT, MRI or radionuclide bone scan.Patients were assigned to three groups of agriculture (320 cases), non-agricultural (424 cases), the other(318 cases) groups by different occupation.The patient's age, gender, ethnicity, single or bilateral, etiology, staging, time of onset and region were compared in each group.Results The proportions of gender (male/female) were 21.94％ (233/1062) and 8.19％ (87/1062) in agriculture group,32.77％ (348/1062) and 7.16％ (76/1062) , 21.66％ (230/1062) and 8.29％ (88/1062) in non-agricultural and the other groups respectively.The proportions of region (Northeast, North, East, South, Southwest, Northwest of China) were 3.30％ (35/1062), 8.00％ (85/1062), 8.10％ (86/1062), 4.80％ (51/1062), 3.11％(33/1062) ,2.82％ (30/1062) in agriculture group, 8.29％ (88/1062), 10.08％ (107/1062), 7.72％ (82/1062), 7.25％ (77/1062), 2.26％ (24/1062), 4.33％ (46/1062), and 4.05％ (43/1062), 8.38％ (89/1062) ,8.10％(86/1062) ,4.61％(49/1062) ,2.17％(23/1062) ,2.64％(28/1062) in the group of non-agricultural and the other.The proportions of etiology (alcohol, hormones, trauma, two or more, the other) were 5.46％ (58/1062), 6.97％ (74/1062), 4.43％ (47/1062), 0.94％ (10/1062), 12.34％ (131/1062) in agriculture group, 10.55％ (112/1062), 7.72％ (82/1062), 5.74％ (61/1062), 2.26％ (24/1062), 13.65％ (145/1062), and 4.90％ (52/1062), 5.93％ (63/1062), 4.90％ (52/1062), 0.66％ (7/1062), 13.56％ (144/1062) in the group of non-agricultural and the other.The proportions of gender, region, etiology in each group were analyzed by x2 test, the differences were statistically significant (x2 =12.77, 24.55, 26.36, P ＜0.05).The onset time and ARCO staging in each group, the correlations were analyzed by Spearman test, the differences were statistically significant(rs =0.282,0.232,0.208, P＜0.05).The onset of time and average age in different occupational group with different, due to factors such as gender, ethnicity, single or bilateral, region, and so on.Conclusion Patients with avascular necrosis of femoral head in different occupational group have different epidemiological characteristics.The occupational characteristics analysis can provide scientific data for diagnosis,treatment and prevention in patients with avascular necrosis of femoral head.

Objective To investigate the clinical effects of the sural nerve and saphenous nerve nutrient vascular island flaps in repairing pediatric ankle or foot soft tissue defect.Methods From June 2009 to January 2013,19 cases of heel soft tissue defect were collected in hospitalized children,in which 10 cases of ankle or foot soft tissue defects were repaired with reversed sural nerve nutrient vascular island flaps and 9 cases with ankle or foot soft tissue defects with reversed saphenous nerve nutrient vascular island flaps.The skin defect areas were from 3 cm× 5 cm～5 cm× 13 cm.Results All neurocutaneous vascular flaps survived after transplantation,the wound of donor area and recipient area healed,and texture and color of flap were good.The postoperative follow-up for 3-30 months (an average 14 months) showed no secondary infection,sensory recovery for S3-S4,texture and color were similar to normal skin,and the limb shape and function were satisfactory.Conclusions The sural nerve and saphenous nerve nutrient vascular island flaps are reliable of blood supply,which do not damage the main vessel,and could reconstruct feeling.Such flaps are ideal to repair foot or ankle soft tissue defects.