Objective To analyze the inhibitive effect of Keerkang Oral Liquid on adenovirus (ADV3) , parainfluenza virus (HVJ) , respiratory syncytial virus (RSV) , and herpes simplex virus 1 (HSV-1) , herpes simplex virus 2 ( HSV-2 ) in cell culture. Methods Sensitive cell culture was adopted, and chick embryo kidney (CEK) cells and bit hamster kidney (BHK) cells were used to infect homologous virus. Keerkang Oral Liquid was given after 2 hours, then cytopathie phenomenon (CPE) was observed. Results When the amounts of infected virus are less than or equal to 100TCID50, the group which was given Keerkang Oral Liquid showed CPE, while the virus control group showed 25%～75% CPE. Besideds Keerkang Oral Liquid showed inhibitive effect on maximum non-venom concentration (TD0) , medium effective concentration (IC50), minimum valid concentration (MTC) and therapeutic index (TI) ofADV3, HVJ, RSV, BSV-1, and HSV-2 by 0.5, 0.25, 0A25-0.0625 ml/ml and 4.8 respectively. Conclusion Keerkang Oral Liquid has obvious inhibitive effects on ADV3, HVJ,RSV and HSV-1, HSV-2 in cell culture, which provides experimental basis for treating ADV3, HVJ, RSV and HSV-1, and HSV-2.

Objective To analyze the effect of Kecrkang oral Liquid on extracorporeal bacteriostasis. Methods Tube dilution method was adopted to test the effect of different concentrations of Keerkang oral liquid on bacillus coli, klebsiella pneumoniae, bacillus aeruginosus, staphylococcus aureus, staphylococcus epidermidis, β-Streptococcus hemolyticus, streptococcus pneumoniae, haemophilus influenzae and candida albicans. Results Keerkang Oral Liquid has obvious inhibited effects to all the bacteria that mentioned above. Conclusion Keerkang Oral Liquid has obvious extracorporeal bacteriostasis and resistance to fungi.

BACKGROUND: Lung cancer is the most common neoplasmas with a poor prognosis and a low 5-year survival rate. Early screening is an important measure for the prevention and treatment of lung cancer. At present, different countries have issued corresponding lung cancer screening guidelines, but China still lacks guidelines based on Chinese population research. Therefore, the National Cancer Center launched a Multi-center Cancer Screening Program in Urban China. This study analyzed the evaluation of lung cancer risk assessment model and screening effect in urban China of Yunnan, so as to explore the evaluation model of high-risk lung cancer population suitable for China's national conditions and develop lung cancer screening guidelines for Chinese. METHODS: A questionnaire survey and lung cancer risk assessment were conducted on 165,337 people in 36 street offices in 4 main urban areas of Kunming, Yunnan Province, using cluster sampling method from January 2015 to December 2019. People with high-risk of lung cancer conducted low-dose computed tomography (LDCT) screening of chest. What's more, all participants were followed up by active or passive follow-up. RESULTS: There were 264 patients were diagnosed lung cancer by pathology, and the overall incidence of lung cancer was 0.16% (264/165,337). The high-risk group (0.31%, 116/37,914) was higher than the non-high-risk group (0.12%, 148/127,423), and the difference was statistically significant (P<0.001). The incidence of lung cancer in the high-risk group was higher than the non-high-risk group among the male, female, and lower 50-year-old or more than 50-year-old subgroups, with statistical differences (P<0.001), but there was no statistical difference in the group without LDCT screening (P=0.73). The sensitivity of the lung cancer high-risk population assessment model was 43.94% (116/264) and the specificity was 77.10% (127,275/165,073). The early diagnosis rate of the screening group was 72.97% (54/74), which was significantly higher than that of the non-screening group [28.48% (43/151)]. CONCLUSIONS The lung cancer high-risk population assessment model of National Key Public Health Program: Cancer Screening Program in Urban China can detect high-risk populations and improve the early diagnosis rate of lung cancer effectively.