Re-vaccination against SARS-COV2 in allogeneic HSCT patients: Repeated primary vaccines doses increases seroconversion rates

Patients undergoing treatment for haematological malignancies have been shown to have reduced antibody responses to vaccination against SARS-COV2. This is particularly important in patients who have undergone allogeneic haemopoietic stem cell transplantation (HSCT), in whom there is limited data about vaccine efficacy. In this retrospective single-centre analysis, we present data on serologic responses following one, two, three or four doses of either Pfizer-BioNTech (PB), AstraZeneca (AZ) or Moderna (MU) SARS-CoV- 2 vaccines from a series of 75 patients who have undergone allogeneic HSCT within 2 years from the time they were revaccinated. The seroconversion rates following post-HSCT vaccination were found to be 50.7%, 78%, 79% and 83% following the first, second, third and fourth primary post -HSCT vaccine doses, respectively. The median time from allograft to first revaccination was 145 days (range 79-700). Our findings suggest that failure to respond to the first SARS-CoV- 2 vaccine post-HSCT was associated with the presence of acute GVHD (p = 0.042) and treatment with rituximab within 12 months of vaccination (p = 0.019). A statistical trend was observed with the presence of chronic GVHD and failure to seroconvert following the second (p = 0.07) and third (p = 0.09) post-HSCT vaccine doses. Patients who had received one or more SARS-CoV- 2 vaccines prior to having an allogeneic stem cell transplant were more likely to demonstrate a positive antibody response following the first dose of revaccination against Sars-CoV- 2 (p = 0.019) and retained this seropositivity following subsequent doses. The incidence of confirmed COVID-19 diagnosis among this cohort at the time of analysis was 16%. 17% of these were hospitalised and there was one recorded death (8%) secondary to COVID-19 in a patient who was 15.7 months post allogeneic transplant. In summary, this study suggests that despite the initial low seroconversion rates observed postallogeneic transplant, increasing levels of antibody response are seen post the second primary vaccine dose. In addition, there seems to be lower risk of mortality secondary to COVID-19 in this vaccinated population, compared to what was reported in the earlier phases of the pandemic prior to use of SARS-COV2 vaccination. This adds support to the widely adopted policy of early full revaccination with repeat of primary vaccine doses and boosters post-HSCT to reduce mortality in this population. Finally, we have identified rituximab use and active GVHD as potential risk factors influencing serological responses to SARS-COV2 vaccination and further work should focus on further characterising this risk and optimum dosing schedule both pre-and post-transplant.

Should COVID-19 pandemic mitigations in the myeloma clinic continue? A summary of patient opinions

Introduction: The COVID-19 pandemic necessitated multiple changes to the format of myeloma clinics to minimise the risk of infection among patients and staff. These included changing in-person clinic appointments to telephone appointments when there was no medical need for face-to- face review and instituting a courier service for delivery of oral or self-administered medications. As COVID-19 restrictions relaxed, we sought to investigate the acceptability of these changes to our patients and to determine which, if any, of the new arrangements should continue. Method(s): Patients who attended the Myeloma Clinic at The Royal Marsden Hospital, both in-person and by telephone, on four separate dates in August and September 2022 were asked to complete a questionnaire to provide their opinions using a combination of multiple-choice, Likert scale and free-text questions. These covered the main domains of change outlined above along with questions about blood test location and attendance with family and friends. Result(s): Questionnaires were returned by 59 patients, 11 relating to in-person appointments and 48 to telephone appointments. 86.0% of patients were in favour of continuing the option of telephone appointments, with many highlighting their convenience and the avoidance of long travel and waiting times, with some also mentioning their COVID-19 security. However, a number of patients expressed concerns including communication difficulties, the inability to effectively assess physical health with an examination and a lack of reassurance. Furthermore, those who attended in-person appointments felt they were very COVID-secure, assigning them a mean of score of 4.5, where 1 was very insecure and 5 very secure. Several suggested that the optimum schedule would include regular telephone appointments with occasional in-person meetings. Interestingly, only 25.5% of patients wanted a video calling option. Patients were also very positive about receiving medications by courier, with 94.1% of patients receiving their medications within two working days of their clinic appointment. 81.8% of patients expressed a wish for this option to continue, highlighting the increased convenience and reduction in waiting times. Conclusion(s): These results suggest that changes made to the Myeloma Clinic in response to the COVID-19 pandemic have improved the patient experience. A mixture of telephone and in-person appointments may be preferable for this cohort of patients, many of whom require regular appointments for chemotherapy approval but are medically stable, and whose frailty makes long travel and waiting times challenging. These findings have implications for the planning of myeloma clinics across the UK.

The impact of social and organisational capital on service innovation capability during COVID-19: the mediating role of strategic environmental scanning

Purpose This purpose of this study was to examine the impact of social and organisational capital on service innovation capability among service firms in the United Arab Emirates (UAE) during the COVID-19 pandemic. Design/methodology/approach To test the proposed research model, data were collected using a cross-sectional questionnaire. The study sample consisted of 188 private and public service sector managers in the UAE. Partial least square-based structural equation modelling (PLS-SEM) was used to examine the research model's validity and reliability and to test the research hypothesis. Findings The empirical evidence indicates that during this pandemic the relationship between social capital and service innovation capability was fully mediated by strategic environmental scanning, while partially mediating the relationship between organisational capital and service innovation capability. Practical implications Managers in service organisations must be proactive during crises such as the COVID-19 pandemic. Specifically, they should emphasise effective environmental scanning and the tracking of customer preferences to provide customised services that are valued and meet the emerging requirements of their customers. Prioritising investment in organisational capital to enhance innovation capacity is also recommended. Originality/value This study is the first to examine strategic environmental scanning as a mediator between social and organisational capital and service innovation capacity during a pandemic. There were significant differences between the findings of our study and previous studies: the authors found that, during crises, management priorities change, and businesses become more reliant on organisational capital to develop service innovation capability.

Prediction of Cytokine Storm and Mortality in Patients with COVID-19 Admitted to ICU: Do Markers Tell the Story?

Introduction: COVID-19 has caused approximately one million deaths worldwide as of November 24, 2020. Markers of disease activity like ferritin, C-reactive protein (CRP), and D-dimers are frequently monitored to detect the best opportunity for intensive treatment. Methods: All patients of >18 years of age were included. The primary variables of interest, ferritin, CRP, and D-dimers, for each patient throughout hospitalization were recorded. Primary clinical outcomes of length of stay in ICU and survival were recorded. Demographics: age, gender, BMI, and nationality. Ferritin, CRP, and D-dimers were recorded daily if available for the whole ICU stay, and all other variables were recorded on admission day to ICU. Results: The sample includes 235 records. More than 95% of patients have all markers on the day of admission to ICU were ferritin (median 1,278;IQR 1,424), D-dimer 1.21 (3.4), and CRP 129.5 (121). Daily average levels of markers were different from their admission day level: ferritin 1,395 (1,331), D-dimer 3.11 (5.52), and CRP 107 (75.8). Multiple logistic regression analysis determined that average CRP during the stay was the only predictor of survival. Discussion: Data on markers utilization to detect the acute phase of inflammation help clinicians focus on the opportunity window for intensive treatment. Conclusion: Average CRP during the stay in ICU is higher than CRP on admission. Average CRP is the only factor that predicts survival.

Re-infection of SARS-CoV-2: A case in a young dental healthcare worker.

Reinfection with SARS-CoV-2 is a rare phenomenon. To date, there has been some cases reported from countries such as United States, Ecuador, Hong Kong, the Netherlands and Belgium. This case report presents the first case of reinfection from Saudi Arabia, and probably the first dental student to have been re-infected with COVID-19. A 24-year-old male dental student presents with reinfection after a period of three months since he was first infected with COVID-19. The signs and symptoms reported by the patient were similar in both instances, except that he developed fever only at the time of reinfection. The infection and reinfection were confirmed with a RT-PCR test reports. This report highlights how it is necessary to continue to observe all the prescriptions recently indicated in the literature in order to avoid new contagion for all health workers after healed from covid-19 or asymptomatic positive, since as seen sometimes the infection does not ensures complete immunity in 100% of cases.

Novel corona virus disease (COVID-19) awareness among the dental interns, dental auxiliaries and dental specialists in Saudi Arabia: A nationwide study.

BACKGROUND: Dental health care workers (DHCW's) are invariably at a higher risk of contracting COVID-19. The objectives were; to investigate the current knowledge on COVID-19 among the DHCW's; and to conduct quasi-experiment among the DHCW's who were unaware of the disseminated COVID-19 information. METHODS: A nationwide cross-sectional study targeting dental interns, auxiliaries, and specialists with a two-staged cluster sampling technique was performed. A 17-item questionnaire was subjected to reliability and validity tests before being administered. The participants for quasi-experiment were separated from the original sample after their initial response. Chi-square test assessed responses to knowledge statements between the participants. Difference in mean knowledge scores between the categories of DHCW's and sources of COVID-19 information was assessed using ANOVA. Data from the quasi experiment (pre vs post knowledge intervention) was subjected to paired t-test. Percentage of DHCWs providing correct or wrong responses to each knowledge statement at baseline and after 7 days were compared using McNemar test. RESULTS: The overall sample consisted of 706 (N) participants, and the DHCW's with no prior knowledge on COVID-19 (N=206) were part of the quasi experiment. Findings from cross-sectional study revealed that knowledge was significantly (p<0.05) related to the qualification level (interns vs auxiliaries vs specialists). However, the difference in the source of information (WHO/CDC vs Journal articles vs MoH) did not demonstrate any effect. Number of participants with correct responses to knowledge questions had significantly (p<0.05) increased after intervention. Also, the overall mean knowledge score (10.74±2.32 vs 12.47±1.68; p<0.001) had increased significantly after the intervention. CONCLUSION: In conclusion, the basic knowledge on COVID-19 among the DHCW's in Saudi Arabia is acceptable. Timely dissemination of information by the Ministry of Health, Saudi Arabia had a positive impact on the COVID-19 knowledge score of the DHCW's.