Objective To observe the foveal contour characteristic of idiopathic epiretinal membrane (iERM).Methods A total of 53 eyes in 52 patients with iERM who underwent pars plana vitrectomy with epiretinal membrane and inner limiting membrane peeling were enrolled in this retrospective study.All eyes received the examination of optical coherence tomography (OCT) and minimum resolution angle in logarithmic (logMAR) best corrected visual acuity (BCVA).Foveal contour grading was according to the ratio of central macular thickness (CMT) to the thickness of the retina 1 mm away on OCT line scan:Grade 0,depressed;Grade 1,flat;Grade 2,elevated.Baseline foveal contour grade was as follows:28 eyes with Grade 1 (Group 1),and 25 eyes with Grade 2 (Group 2).The mean logMAR BCVA was 0.40±0.26 in Group 1,and 0.60±0.27 in Group 2 respectively.The mean CMT was (433.52± 133.05) μm and (571.70± 85.40) μm respectively.The logMAR BCVA and CMT both demonstrated significant difference between the two groups (t=-2.825,-4.512;P＜0.05).OCT images and BCVA at 1,3 months after surgery were collected and analyzed.The change in foveal contour,BCVA and CMT were evaluated.The relationship between surgical outcome and different preoperative grading was analyzed.Results Foveal contour grade at 3 months after surgery was as follows:15 eyes with Grade 0,21 eyes with Grade 1,and 17 eyes with Grade 2,demonstrating significant difference compared with baseline (Z=-3.588,P＜0.05).In Group 1,there were 12 eyes with Grade 0,10 eyes with Grade 1,and 6 eyes with Grade 2 postoperatively.In Group 2,there were 3 eyes with Grade 0,11 eyes with Grade 1,and 11 eyes with Grade 2 postoperatively.The postoperative foveal contour grade was significantly different between the two groups (Z=-2.466,P＜0.05).The logMAR BCVA at 1,3 months after surgery both improved significantly compared with baseline (P＜0.05) in Group 1 (t=3.226,5.439) and Group 2 (t=-4.137,5.919).The logMAR BCVA at 1,3 months after surgery demonstrated significant difference between the two groups (t=-2.231,-2.291;P＜0.05).The CMT decreased significantly at 1,3 months after surgery in Group 1 (t=-2.674,4.090) and Group 2 (t=-9.663,-9.865) compared with baseline (P＜0.05).TheCMT at 1,3 months after surgery demonstrated significant difference between the two groups (t=-2.825,-3.003;P＜0.05).The improvement of logMAR BCVA 3 months after surgery was negatively correlated (P＜0.05) with preoperative logMAR BCVA (r=— 0.758) and preoperative CMT (r 0.359).Conclusion In iERM eyes,flat foveal contour had better surgical prognosis than elevated ones.

By reviewing the organization and implementation of “Hongsha-2021” Guangxi nuclear emergency joint exercises, this article summarizes the experience in the organization process and puts forward some thoughts and suggestions in order to improve the depth of provincial-level on-site and off-site joint exercises for nuclear emergency at nuclear power plants and further enhance the emergency response capacity of nuclear emergency organizations at all levels.

ObjectiveTo analyze the epidemiological characteristics and trends of influenza‑like illness (ILI) in Jiading District from 2013 to 2023, to explore the prevalence patterns, so as to provide a scientific basis for a better prevention and control of influenza. MethodsData of ILI cases, pathogenetic surveillance results and pathogen detection data from influenza surveillance network laboratories in Jiading District from 2013 to 2023 were collected for statistical analysis. ResultsFrom 2013 to 2023, the overall proportion of medical visits for ILI cases in Jiading District was 2.70%. ILI cases were mainly distributed in the age group of ≥25 years, with a seasonal prevalence characteristic, mainly concentrated in the winter and spring, with an occasional small peak in the summer. A total of 12 423 specimens were tested for pathogenetic surveillance and monitoring, 3 651 of which were tested positive for nucleic acid detection, with a positive rate of 29.39%. The dominant strain was influenza A (H3N2) virus, accounting for 55.05%. There were statistical significant differences in the positive detection rates by different streets and townships(χ²=24.73，P<0.05）. The influenza network laboratory isolated and cultured influenza viruses from 3 154 nucleic acid‑positive samples sent by national influenza sentinel surveillance hospitals using 2 methodsMadin‑Darby canine kidney (MDCK) cells and specific pathogen free (SPF) chicken embryos, respectively, with a total isolation rate of 39.51%, and the isolation rate of MDCK cells (35.45%) was higher than that of SPF chicken embryos (5.36%). From 2013 to 2023, a total of 14 ILI outbreaks were reported in Jiading District, mainly in primary schools, kindergartens and secondary schools. ConclusionInfluenza in Jiading District, Shanghai, is mainly prevalent in the winter and spring, with different subtypes of influenza viruses alternating or co⁃circulating in different monitoring year. It is recommended to promote influenza vaccination, further improve influenza prevention and control measures, enhance health promotion to the age group of ≥25 years in winter and spring, and strengthen surveillance and monitoring on ILI outbreaks in collective units such as primary schools and childcare institutions, so as to reduce the disease burden.