Objective: To investigate the willingness to receive a COVID-19 vaccination and its influencing factors among individuals that missed the second dose of the inactivated COVID-19 vaccine in Zhejiang Province, so as to provide the evidence for improving the strategy for COVID-19 vaccination. Methods: Individuals that did not receive the second dose of the inactivated COVID-19 vaccine after 56 days of getting the first dose (missed individuals) from March and May, 2021, were randomly sampled from Zhejiang Provincial SaaS Vaccination Information System. Their basic information, status of getting the inactivated COVID-19 vaccine and willingness to receive the second dose of the inactivated COVID-19 vaccine were collected through telephone interviews. The factors affecting the willingness to receive the second dose of the inactivated COVID-19 vaccine were identified among the missed individuals using a multivariable logistic regression model. Results: Totally 562 individuals were investigated, and there were 292 (51.96%) valid respondents. There were 54 actual missed individuals, with a mean age of (40.91±16.75) years, which included 39 men (72.22%) and 15 women (27.78%). Of all missed individuals, 23 had an educational level of junior high school and below (42.59%). The mean duration from the time of investigation to the time of getting the first dose of the inactivated COVID-19 vaccine was (137±28) days. A half of the missed individuals were willing to receive the second dose of the inactivated COVID-19 vaccine. Multivariable logistic regression analysis showed high willingness to receive the second dose of the inactivated COVID-19 vaccine among the missed individuals with requirements of vaccination in the workplace (OR=5.393, 95%CI: 1.112-26.152) and low willingness among the missed individuals that felt physical discomfort after receiving the first dose (OR=0.168, 95%CI: 0.035-0.806). Conclusions The willingness to receive the second dose of the inactivated COVID-19 vaccine was low among the missed individuals, and high willingness is seen among the missed individuals with requirements of vaccination in the workplace and without physical discomfort after receiving the first dose of the inactivated COVID-19 vaccine.

Objective To explore the relationship between inflammatory cytokine expression and outcome of acute stroke.Methods Eighty six acute stroke patients and 80 health people were recruited as the case and control group respectively.Peripheral blood CD3 +, CD4 +, CD8 +T cells were analyzed with flow cytometry;IL-10, IL-6, IFN-γin peripheral blood and cerebrospinal fluid ( CSF) were detected with enzyme linked immunosorbent assay ( ELISA); Outcome of acute stroke patients were evaluated with Na-tional Institutes of Health Stroke Scale(NIHSS)scoring in the 5th day.Results Contrast with the controls, the expression of CD3 +, CD4 +and CD8 +in case group were decresed( P <0.01), IFN-γexpression in peripheral blood of cases (within the 24th hour) were lower( P <0.01).IL-10 expression were higher( P=0.001).IL-10 was down-regulation of expression( P <0.01)at the 5th day compared with the 24th hours in peripheral blood, but up-regulation in CFS( P <0.01), and IFN-γwas down-regulation of expression ( P <0.01) at the 5th day.Conclusions IL-10 and IFN-γexpression changes lead to disorder of immune balance and are harmful for progressive acute stroke patients, Monitoring the change of IL-10,IL-6 and IFN-γare helpful for diagnosis and prognosis of acute stroke.

Objective: To learn the epidemiological characteristics of coronavirus disease 2019（COVID-19）in Huzhou,so as to provide reference for prevention and control of COVID-19. Methods: All the confirmed cases of COVID-19 in Huzhou,diagnosed according to the COVID-19 Diagnosis and Treatment Plan（Sixth Version Trial）and reported from January 25 to February 7,2020,were recruited. The process of diagnosis and treatment,clinical manifestation,exposure history and close contacts were collected to analyze the epidemiological characteristics. Results: On January 25,the first confirmed cases of COVID-19 in Huzhou was reported. By February 7,totally 10 confirmed cases were reported and no asymptomatic infection was found. They were all imported,including three Wuhan residents,two with a trip to Wuhan,three with a trip to Suizhou,one with a trip to Hangzhou and one with a trip to Thailand（two Wuhan passengers on the same flight）. The ratio of male to female cases was 1∶1. The median age was 32 years old. Seven cases were found when they went to a doctor by themselves,and three cases were found during the quarantine. The main clinical manifestations were fever,dry cough and fatigue. The median time from onset to diagnosis was 3 days. By March 3,all the cases were discharged,with median course of 24 days. There were 312 close contacts,and all of them were released after 14 days of quarantine. Conclusions To prevent imported cases from outside and stop spread inside taken by Huzhou government was proved to be effective. All the COVID-19 cases in Huzhou were imported,mostly from Wuhan. No local cases were reported.

Objective To study the early survival rate and its influencing factors of extremely preterm infants and extremely low birth weight ( ELBW ) infants.Method All extremely preterm infants and/or ELBW infants in Shandong Provincial Hospital from January , 2010 to December 2015 were studied retrospectively.The factors affecting their survival rate and their complications were analyzed retrospectively . All cases were assigned into the survival group and the death group .On the other hand , they were also assigned into two groups according to their birth , pre-2014 and post-2014.Result A total of 142 extremely preterm infants and/or ELBW infants were enrolled, their gestational age was 28 (27, 29) weeks, birth weight was 925 (830, 965) g.76 cases (53.5%) survived, 66 cases (46.5%) died.Factors associated with the survival rate were early onset sepsis , placental abruption , perinatal asphyxia , birth weight and pulmonary hemorrhage (P<0.05).There were 67 cases pre-2014 in which 30 cases survived (44.8%), while 75 cases post-2014 in which 46 cases survived ( 61.3%) .Comparative analysis between the two groups pre-2014 and post-2014 revealed that the survival rate was significantly different (χ2 =3.900, P=0.048).The top 2 underlying causes of death before 2014 were perinatal asphyxia and early onset sepsis . Furthermore, early onset infection became the first cause of death after 2014.Conclusion Along with the prevalence of neonatal resuscitation program and the optimization of respiratory support strategies in premature infants , the early survival rate of extremely preterm infants and /or ELBW infants has improved significantly.However, early onset sepsis may have been the crucial cause for their perinatal mortality .