Assessment of COVID ‐19 exposure risk in the blood transfusion laboratory

Perceived support and preparedness for the next pandemic among Israeli social workers in hospital settings during the COVID-19 pandemic

This study describes the conditions under which Israeli social workers in hospital settings operated s during the COVID-19 pandemic, and assesses their perceived support (informal and organizational support) and preparedness for the next pandemic. It further assesses correlates for perceived support and associations between perceived support and preparedness. The participants were 163 social workers from four hospitals who completed an on-line survey. The findings revealed that the level of exposure to COVID-19 and fear of contracting COVID-19 were unrelated to perceived informal and organizational support. Age and having children who are minors living at home moderated the relationship between fear of contracting COVID-19 and both types of perceived support. Each type of perceived support was significantly associated with preparedness beyond age, having minors at home, exposure to COVID-19, and fear of contracting COVID-19. Implications for research and practice are discussed.

Effects of nanosized water droplet generation on number concentration measurement of virus aerosols when using an airblast atomizer

Development of efficient virus aerosol monitoring and removal devices requires aerosolization of the test virus using atomizers. The number concentration and size measurements of aerosolized virus particles are required to evaluate the performance of the devices. Although diffusion dryers can remove water droplets generated using atomizers, they often fail to remove them entirely from the air stream. Consequently, particle measurement devices, such as scanning mobility particle sizer (SMPS), can falsely identify the remaining nanosized water droplets as virus aerosol particles. This in turn affects the accuracy of the evaluation of devices for sampling or removing virus aerosol particles. In this study, a plaque-forming assay combined with SMPS measurement was used to evaluate sufficient drying conditions. We proposed an empirical equation to determine the total number concentration of aerosolized particles measured using the SMPS as a function of the carrier air flow rate and residence time of the particles in the diffusion dryers. The difference in the total number concentration of particles under sufficient and insufficient diffusion drying conditions was presented as a percentage of error.

Survey based cross-sectional study to analyse the variation of practices at blood centres during COVID-19 pandemic in India

India has almost 3,000 blood centres collecting more than 11 million units annually. Maintaining blood supply during the COVID-19 pandemic is a huge challenge. We conducted a cross-sectional study by an online survey to analyse the variation of practices across blood centers of India during this pandemic. A total of 196 blood centers completely responded to the online survey. Most of the blood centres who responded were part of Government hospitals (60 %), part of an academic institutes (55.6 %) and were directly supporting a COVID hospital (67.5 %). Almost 95.4 % blood centers reported reduction of blood donation mainly due to lockdown (50 %) and inability to conduct camps (17.3 %). Scheduling blood donations was one of the most difficult to implement strategy for maintaining adequate blood donation (40.2 %). Blood center manpower management was also a challenge and upto 48 % blood centers operated in two batches to ensure social distancing in blood banks and reduce the risk of exposure. Hemato-oncology (36.8 %) and obstetrics (33.7 %) were major utilizer of blood during the pandemic. There were marked variations in use of PPE by blood banks staff as well as strategies adopted while conducting immunohematology tests on COVID-19 positive patients samples. This pandemic has highlighted some of the major limitations of the health services but blood services have risen to the challenge and strived to maintain the blood supply chain while ensuring blood donor and staff safety. The wide variations in the practices adopted highlights the need for uniform guidelines for blood services in future pandemics.