Background: Thirteen COVID-19 vaccines are granted emergency approval. It is crucial to monitor their adverse events post vaccination. The present study focuses on cardiovascular adverse events post-COVID-19 vaccination and aims to determine adverse events with the administered vaccine. Methodology: The cardiovascular (CVS) adverse events were extracted for three broad headings (SOCs) -cardiac disorders, vascular disorders, and investigations. Descriptive statistics were reported in the form of percentage and frequency, and the disproportionality analysis was conducted. Results: For the cardiovascular system, 4863 adverse events (AEs) were reported from BNT162b2 Pfizer, 1222 AstraZeneca, Moderna, and other COVID-19 vaccines. Common adverse events observed with vaccines under study were tachycardia (16.41%), flushing (12.17%), hypertension (5.82%), hypotension (3.60%) and peripheral coldness (2.41%). Based on disproportionality analysis (IC 025 values), acute myocardial infarction, cardiac arrest, and circulatory collapse were linked to the vaccines in the age group >75 years. Hypertension, severe hypertension, supraventricular tachycardia, sinus tachycardia, and palpitations were associated across all age groups and either gender. Amongst the investigations, abnormal ECG findings raised C-reactive protein, elevated D dimer, and troponin were reported in specific age groups or gender or all subjects. Conclusion: Although cardiovascular events have been reported with the COVID-19 vaccines, the causality is yet to be established because such CVS AEs are also usually associated with the general public even without intervention. Hence, people should be administered these vaccines, and sustained monitoring of these AEs should be done.

Large granular lymphocytic leukemia (LGLL) is a rare hematological malignancy that arises from cytotoxic T lymphocytes (T‐LGLL) in 85% of cases and natural killer (NK) cells in the rest. A significant knowledge gap exists regarding the pathogenesis, treatment choices, and prognostic factors of LGLL. We report a cohort of 319 consecutive LGLL patients who presented to our cancer center between 2001 and 2020. A total of 295 patients with T‐LGLL and 24 with chronic NK‐cell lymphoproliferative disorder (CLPD‐NK) were identified. The median age was 65 years (range, 17–90 years). Eighty‐three patients (26.0%) had autoimmune diseases. A total of 119 patients (37.3%) had coexisting malignancies, 66 (20.7%) had solid tumors, and 59 (18.5%) had hematological malignancies. Most coexisting malignancies were diagnosed before the diagnosis of LGLL. Treatment was needed for 57% of patients. Methotrexate (MTX), cyclophosphamide (Cy), and cyclosporine A (CSA) were most used and had similar response rates between 61.5%–74.4%. Cy produced more complete responses (32.3%) compared to MTX and CSA (15.7% and 23.1%, respectively). Thrombocytopenia, splenomegaly, and female gender (after controlling for autoimmune diseases) were associated with decreased response rates to MTX, CSA, or Cy. Autoimmune diseases were associated with increased response rates. Thrombocytopenia was an independent risk factor for worse survival.

Rhabdomyosarcoma (RMS) is a rare malignant soft tissue neoplasm comprised of cells derived from the primitive mesen¬chyme. About 35% of RMS arises in the head and neck, are are classified as parameningeal and non-parameningeal forms. These are the most common soft tissue sarcoma of the children, adolescents and young adults. Their etiopathogenesis and its molecular relevance have been emphasized. The first line of treatment is radical excision and this is usually supplemented by radiotherapy. It is believed that adjunct combination chemotherapy may greatly improve the prognosis. Inadequately treated tumours grow in an infiltrative manner and recur in a high percentage of cases. Bone does not constitute an effective barrier to the growth of the tumour and bone invasion is a frequent finding in head and neck rhabdomyosarcomas. Key words:Rhabdomyosarcomas, botryoid, spindle, alveolar, sarcomas, undifferentiated.

Purpose – The purpose of this paper is to further theory development in the field of social entrepreneurship by developing a research agenda for examining organizational learning in social enterprises. Design/methodology/approach – This paper anchors in the interpretive paradigm of learning. It draws on social entrepreneurship literature to identify unique features of social enterprises. These characteristics are then investigated from a situated learning perspective to develop research questions around the following themes: social structures enabling learning, boundaries, boundary objects, boundary roles and boundary interactions. Findings – Boundaries are identified as loci around which critical learning interactions occur in social enterprises. The significance of studying implicit and explicit boundaries, knowledge brokering, boundary objects and boundary interactions for gaining novel insights into the social enterprise learning process is highlighted. Originality/value – This paper assists the progression of academic discussion in social entrepreneurship from definitional debates to critical organizational-level phenomena. It brings to attention the importance of studying organizational learning in the unique context of social entrepreneurship for advancing organization theory. It informs practice by highlighting critical social structures, boundaries, agents and objects which need to be identified and managed for promoting learning in social enterprises.

Background: In the light of the current pandemic, the emergency approval of few COVID-19 vaccines seems to provide a ray of hope. However, their approval is solely based on limited data available from the clinical trials in a short period of time; thereby imposing a necessity to study the adverse events (AEs) associated with their use. This study therefore aims to assess the Serious Adverse Events (SAEs) associated with various COVID 19 vaccines reported in the WHO database (VigiBase). Methods: The data from VigiBase was analyzed to assess the reported SAEs linked to various COVID 19 vaccines. The duplicates in the data were removed and were analyzed on the basis of age, gender, and seriousness of adverse events at the System Organ Classification (SOC) level and the individual Preferred Term (PT) level. Results: A total 103954 adverse events reported from 32044 subjects were taken for analysis. Of 32044 subjects, majority were females (80%). Also, a total of 28799 (27.7%) SAEs were reported from the 8007 individuals. Most of the SAEs were reported from Europe (83%), amongst females (79.4%) and between 18 to 64 years (80.74%) of age. Majority of SAEs (74%) were reported for BNT162b2 (Pfizer) vaccine. On system wise classification, general disorders (30%) were the commonest followed by nervous system (19.1%) and musculoskeletal (11.2%) disorders. In individual category, headache (8.1%) was the commonest, followed by pyrexia (7%) and fatigue (5.1%). The number of SAEs were reported with various vaccines were comparatively lesser as compared to the non-serious ones and incidence of death was low with all the vaccines candidates. Elderly (> 65 years) people reported more serious SAEs as compared to other age groups. Conclusion: The reported SAEs from the COVID 19 vaccines were in line with the data published in clinical trials. To link these SAEs to vaccines will need causality analysis and review of individual reports.