目的调查贵州省毕节市学生肺结核密切接触者筛查情况并分析筛查结果,为毕节市学校结核病防控工作提供参考依据。方法对2022年2—7月毕节市辖区内8个县(区)学校结核病聚集性疫情以及肺结核密切接触者,按照《学校结核病防控工作规范(2017...目的调查贵州省毕节市学生肺结核密切接触者筛查情况并分析筛查结果,为毕节市学校结核病防控工作提供参考依据。方法对2022年2—7月毕节市辖区内8个县(区)学校结核病聚集性疫情以及肺结核密切接触者,按照《学校结核病防控工作规范(2017版)》对其密切接触者进行肺结核可疑症状、结核菌素皮肤(purified protein derivative,PPD)试验及X线胸片筛查,并对结果进行统计学分析。结果2022年2—7月毕节市8个县(区)学生肺结核患者密切接触者共10433人,实际筛查8786人(84.21%)。学生密切接触者肺结核可疑症状筛查率、PDD试验强阳性率和X线胸片异常率分别为0.40%、7.11%、3.64%。此次筛查共检出肺结核患者21例(0.24%),结核潜伏性感染者766例(8.72%);不同月份、学校类型、年龄、性别、是否寄宿的学生肺结核患者密切接触者的PPD试验强阳性率差异有统计学意义(χ^(2)=47.321、138.799、6.465、169.692、26.975,P<0.05);学生结核潜伏性感染者中接受预防性服药的仅有10.70%(82/766)。结论对毕节市学生肺结核患者密切接触者开展筛查能及时发现学生肺结核患者和结核潜伏性感染者,有效控制结核病的传播,是学校结核病防控工作中的重要环节。展开更多
The paper was to evaluate the efficient seasons for embryo transfer of cattle in different climatic zones in China. Three climatic zones(mid-temperate zone,warm temperate zone,subtropical zone) were designed,and embry...The paper was to evaluate the efficient seasons for embryo transfer of cattle in different climatic zones in China. Three climatic zones(mid-temperate zone,warm temperate zone,subtropical zone) were designed,and embryo transfers had been carried out in spring,summer,autumn and winter from 2009 to 2011,respectively. The total number of transplant recipient cattle was 22 208. The results showed that the best seasons for embryo transfers varied with different climatic zones. In mid-temperate zone,summer and autumn were better while summer was the best,and the rate of pregnant was 50. 67%(the number of pregnant cattle was 8 005). In warm temperate zone,spring and autumn were better while autumn was the best,and the rate of pregnant was 54. 99 %(the number of pregnant cattle was 551). In subtropical zone,spring and winter were better while winter was the best,and the rate of pregnant was 56. 94 %(the number of pregnant cattle was 328). The seasonal average temperatures and relative humidity of the best seasons in different climatic zones were concentrated on the same region. In mid-temperate zone,the mean temperature ranged between 22. 4 ℃ and 24. 2 ℃,and the mean relative humidity ranged from 44% to 55. 3%. In warm zone,the mean temperature ranges were between 14. 2 ℃ and 16. 2 ℃,and the mean relative humidity ranges were from 59. 3% to 71. 6%. In sub-tropical zone,the mean temperature ranges were between 3. 26 ℃ and 7. 73 ℃,and the mean relative humidity ranges were from 72% to 80. 6%. Therefore,the optimized conditions of temperature and humidity of season in different zones could be simulated. It is possible that we apply the program to bovine production in the similar agroecological zones,which is of great significance for improving the embryo transfer efficiency of livestock in production.展开更多
文摘目的调查贵州省毕节市学生肺结核密切接触者筛查情况并分析筛查结果,为毕节市学校结核病防控工作提供参考依据。方法对2022年2—7月毕节市辖区内8个县(区)学校结核病聚集性疫情以及肺结核密切接触者,按照《学校结核病防控工作规范(2017版)》对其密切接触者进行肺结核可疑症状、结核菌素皮肤(purified protein derivative,PPD)试验及X线胸片筛查,并对结果进行统计学分析。结果2022年2—7月毕节市8个县(区)学生肺结核患者密切接触者共10433人,实际筛查8786人(84.21%)。学生密切接触者肺结核可疑症状筛查率、PDD试验强阳性率和X线胸片异常率分别为0.40%、7.11%、3.64%。此次筛查共检出肺结核患者21例(0.24%),结核潜伏性感染者766例(8.72%);不同月份、学校类型、年龄、性别、是否寄宿的学生肺结核患者密切接触者的PPD试验强阳性率差异有统计学意义(χ^(2)=47.321、138.799、6.465、169.692、26.975,P<0.05);学生结核潜伏性感染者中接受预防性服药的仅有10.70%(82/766)。结论对毕节市学生肺结核患者密切接触者开展筛查能及时发现学生肺结核患者和结核潜伏性感染者,有效控制结核病的传播,是学校结核病防控工作中的重要环节。
文摘The paper was to evaluate the efficient seasons for embryo transfer of cattle in different climatic zones in China. Three climatic zones(mid-temperate zone,warm temperate zone,subtropical zone) were designed,and embryo transfers had been carried out in spring,summer,autumn and winter from 2009 to 2011,respectively. The total number of transplant recipient cattle was 22 208. The results showed that the best seasons for embryo transfers varied with different climatic zones. In mid-temperate zone,summer and autumn were better while summer was the best,and the rate of pregnant was 50. 67%(the number of pregnant cattle was 8 005). In warm temperate zone,spring and autumn were better while autumn was the best,and the rate of pregnant was 54. 99 %(the number of pregnant cattle was 551). In subtropical zone,spring and winter were better while winter was the best,and the rate of pregnant was 56. 94 %(the number of pregnant cattle was 328). The seasonal average temperatures and relative humidity of the best seasons in different climatic zones were concentrated on the same region. In mid-temperate zone,the mean temperature ranged between 22. 4 ℃ and 24. 2 ℃,and the mean relative humidity ranged from 44% to 55. 3%. In warm zone,the mean temperature ranges were between 14. 2 ℃ and 16. 2 ℃,and the mean relative humidity ranges were from 59. 3% to 71. 6%. In sub-tropical zone,the mean temperature ranges were between 3. 26 ℃ and 7. 73 ℃,and the mean relative humidity ranges were from 72% to 80. 6%. Therefore,the optimized conditions of temperature and humidity of season in different zones could be simulated. It is possible that we apply the program to bovine production in the similar agroecological zones,which is of great significance for improving the embryo transfer efficiency of livestock in production.
