Objective: To investigate the epidemiological characteristics and the causes of two outbreaks of upper respiratory tract infection in our city. Methods: The epidemiological investigation was carried out on the outbreaks and the pharyngeal swabs were collected to do the pathophysiologic examination by using real-time PCR. Hexon gene of adenovirus was amplified by PCR. Then the positive products were sequenced and BLAST searching was done in GenBank. Results: The clinical symptoms of the two cases were high fever, sore throat and cough, etc, while the main signs were pharyngeal congestion and tonsil swelling; 32 students of a class in Yunxing primary school had respiratory infection related symptoms, of which the incidence rate was 55%; while 12 of 38 students in a class of Fangcun primary school were infected. All these students were on school in the same class, and the incidence was aggregate without proliferation. The duration of the disease was about 5 days and the prognosis was good, no death occurred. The positive result of real-time PCR showed adenovirus. BLAST search analysis on hexon gene showed AdV14. Conclusions According to epidemiological investigation and laboratory test results, the cause of these two outbreaks of upper respiratory tract infection was adenovirus type 14.

Objective Exploration of the efficacy of different drugs in the treatment of retinopathy caused by type 2 diabetes. Methods 120 type 2 diabetic retinopathy patients were randomly divided into treatment group of 60 patients and the control group of 60 patients based on random number table method, the control group were selected intravitreal injection with triamcinolone aetonide, and the treatment group were selected intravitreal injection with conbercept, all treatments were done three times and visual acuity, retinal and macular leakage of two groups were observed. Results The best corrected visual acuity after treatment in the treatment group and the control group were 40.45 ± 14.38 and 45.33 ± 12.89 respectively and that were significantly higher than the value before treatment, the statistically significant differences also happened between the two (P < 0.05). The CRT and TMV values of the two groups after treatment were significantly lower than that before treatment (P < 0.05) , while the CRT and TMV values in the treatment group were also significantly lower than the control group (P < 0.05). The typing leakage before and after treatment were mostly with diffuse and there were also no statistically significant differences in intra-group or inter-group. Conclusion Intravitreal injection of conbercept in the treatment of type 2 diabetic retinopathy can effectively recover vision and retinal conditions, it can stable patients' macular edema, thereby improve prognosis.

Objective:To develop an age-appropriate and disease-specific social adaptation measurement tool for adolescents infected with HIV in the context of Chinese culture, and to test its reliability and validity.Methods:Through literature review and consultation with 8 experts, this study constructed the conceptual framework of social adaptation of adolescents infected with HIV and formulated the dimensions and items of the scale. The convenient sampling method was adopted, and questionnaires were distributed online and offline at Beijing Ditan Hospital, Xuzhou Center for Disease Control and Prevention and Yunnan Provincial Infectious Disease Hospital from October 2020 to February 2021 for questionnaire validity testing. A preliminary age-specific and disease-adaptable Social Adaptation Scale for HIV Infected Adolescents was prepared using methods such as project analysis and reliability and validity testing.Results:The scale consisted of 3 dimensions of cognition, emotion and will, 5 variables, and a total of 23 items. The Cronbach's α coefficient of the scale was 0.856, and the split reliability was 0.836. The item-level content validity index ( I- CVI) of the scale was 0.750-1.000, the scale-level content validity index ( S- CVI) was 0.940, and the scale score and subjective well-being scale score were positivelycorrelated ( P<0.05) . Factor analysis extracted 5 common factors, and the cumulative explanatory variable was 61.156%. Conclusions:The scale has good reliability, validity and feasibility, which can be used as an evaluation tool for social adjustment of HIV-infected adolescents in China.