Inactivated vaccine injection and immunoglobulin G levels related to severe coronavirus disease 2019 (Delta) pneumonia in Xi'an, China: A single-centered, retrospective, observational study.

The World Health Organization declared a public health emergency of international concern in January 2020. The Delta variant became the main epidemic strain on 11 May 2021. Vaccines were proven highly effective in controlling hospitalization and deaths associated with severe acute respiratory syndrome coronavirus 2 infections. Real data on vaccine efficacy against B.1.617.2 infection in the Chinese population were currently limited. This study aimed to evaluate the protective effect of inactivated vaccine injection and immunoglobulin (Ig) G levels in coronavirus disease 2019 (COVID-19) severity. This retrospective study included patients with COVID-19 in Xi'an Chest Hospital from December 2021 to January 2022. The protective effect of inactivated vaccine injection and IgG levels on COVID-19 severity was analyzed using multiple logistic regressions. A total of 580 patients were included in the study, of whom 158 (27.24%) were mild, 412 (71.03%) were moderate, 5 (0.9%) were severe, and 5 (0.86%) were critical. Severe case (including severe and critical) rates were 1.72% (10/580). Compared with the unvaccinated group, the vac+IgG- group had a 0.21 (0.02-2.05)-fold risk of suffering from severe cases, and the vac+IgG+ group had a 0.05 (0-0.63)-fold risk of suffering from severe cases. Of the 10 severe cases, 8 were older than 60 years, 8 were men, 8 had underlying diseases, 6 were in the unvaccinated group, and 2 were in the vac+IgG- group. Vaccination and sufficient IgG antibody production can protect patients with COVID-19 from severe cases. Booster vaccine injection can produce a stronger immune response and protection.

Diffusion capacity abnormalities for carbon monoxide in patients with COVID-19 at 3-month follow-up.

OBJECTIVE: To evaluate pulmonary function and clinical symptoms in coronavirus disease 2019 (COVID-19) survivors within 3 months after hospital discharge, and to identify risk factors associated with impaired lung function. METHODS AND MATERIAL: COVID-19 patients were prospectively followed-up with pulmonary function tests and clinical characteristics for 3 months following discharge from a hospital in Wuhan, China between January and February 2020. RESULTS: 647 patients were included. 87 (13%) patients presented with weakness, 63 (10%) with palpitations and 56 (9%) with dyspnoea. The prevalence of each of the three symptoms were markedly higher in severe patients than nonsevere patients (19% versus 10% for weakness, p=0.003; 14% versus 7% for palpitations, p=0.007; 12% versus 7% for dyspnoea, p=0.014). Results of multivariable regression showed increased odds of ongoing symptoms among severe patients (OR 1.7, 95% CI 1.1-2.6; p=0.026) or patients with longer hospital stays (OR 1.03, 95% CI 1.00-1.05; p=0.041). Pulmonary function test results were available for 81 patients, including 41 nonsevere and 40 severe patients. In this subgroup, 44 (54%) patients manifested abnormal diffusing capacity of the lung for carbon monoxide (D LCO) (68% severe versus 42% nonsevere patients, p=0.019). Chest computed tomography (CT) total severity score >10.5 (OR 10.4, 95% CI 2.5-44.1; p=0.001) on admission and acute respiratory distress syndrome (ARDS) (OR 4.6, 95% CI 1.4-15.5; p=0.014) were significantly associated with impaired D LCO. Pulmonary interstitial damage may be associated with abnormal D LCO. CONCLUSION: Pulmonary function, particularly D LCO, declined in COVID-19 survivors. This decrease was associated with total severity score of chest CT >10.5 and ARDS occurrence. Pulmonary interstitial damage might contribute to the imparied D LCO.

Clinical characteristics of deceased hemodialysis patients affected by COVID-19.

BACKGROUND: The recent outbreak of Coronavirus Disease 2019 (COVID-19) is a public health emergency of international concern. In China, Wuhan, Hubei Province was the epicenter. The disease is more severe in patients with high comorbidities and dialysis patients fall into this category. METHODS: In this report, we reviewed the whole course of the epidemic emerged in the HD center of Wuhan NO.1 Hospital by 28 February 2020. We compared the differences on the epidemiological characteristics and clinical features between patients surviving from COVID-19 and patients who died. RESULT: In this hospital, at time of the present report, 627 patients were on chronic hemodialysis and the prevalence of affected cases was 11.8% (74/627).The median age of the COVID-19-positive patients was 63 years (range 31-88), with an almost even gender distribution (females accounted for 54.4%).The most frequent presenting symptom was cough (41.9%), followed by fatigue (24.2%), fever (17.2%) and dyspnea (14.8%); 22.4% of the cases were and asymptomatic. Fourteen of the 74 patients died (19%), as for presenting symptoms, cough was more frequent in patients who died (P < 0.05). Surviving patients had higher levels of phosphate and albumin, and lower levels of C-reactive protein (CRP). Chest CT scan was positive in all cases, including in asymptomatic ones, and revealed in about three fourths of the cases bilateral (76.2%) lesions; in each lung lesions were multiple in about half of the cases of the cases (52.3%). After diagnosis, median time to death was 7 days in the 14 patients who died, with a range between 4 and 18 days. CONCLUSION: This preliminary, single Center study identifies hemodialysis patients as a population at high risk of severe, and deadly COVID-19 infection. While classic baseline clinical conditions, including age, kidney disease and gender, are not significantly associated with survival in COVID-19 infected hemodialysis, our study also suggests a significant association between risk of and death, poor nutritional status and less than optimal metabolic balance.

PSYCHOLOGICAL PREDICTORS OF ANXIETY IN RESPONSE TO THE COVID-19 PANDEMIC: EVIDENCE FROM PAKISTAN (preprint)

COVID -19 epidemic can be associated with variety of anxious responses and safety behaviors. Present research explored the psychological implications associated with covid-19 during the outbreak in 2020 till date. Pakistani media has given particular attention to this outbreak in the region. Three hundred and forty-seven undergraduate university students from Pakistan completeda battery of questionnaires focusing fear of Covid -19, associated safety behaviors, factual knowledge of covid-19and other psychological pointers hypothesized to be as predictors of anxious responses to covid-19 threat. The sample appeared to be fearful of covid-19 and this fear was related to disgust sensitivity, anxiety sensitivity-related physical concerns, body vigilance, contamination cognitions and general distress. Results suggested that tendency of overestimating severity of contamination and anxiety sensitivity towards physical concerns are significant predictors of Covid-19 related fear and consequent safety behaviors. Implications are discussed in the light of managing and conceptualizing clinical symptoms related to serious epidemic. Keywords: COVID-19; Health anxiety; Safety Behaviors; Pakistan