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Natural infection with severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) elicits strong protection against reinfection with the B.1.1.7 (alpha),1,2 B.1.351 (beta),1 and B.1.617.2 (delta)3 variants. However, the ...

More than 2 years into the coronavirus disease 2019 (Covid-19) pandemic, the global population carries heterogeneous immune histories derived from various exposures to infection, viral variants, and vaccination.1 Evidence ...

Imagine, you placed an order online and received it in minutes. This is the future of drone delivery services. Customers can track the drone during its delivery trip via apps like Uber car. Some cities and even rural areas ...

The COVID-19 pandemic has led to a significant disruption in our lives, work, and business. It hit most of us as customers stopped buying, buying less, or less supply. People started coming up with innovative solutions ...

COVID-19 vaccine antigen dose might affect protection against SARS-CoV-2 infection,1, 2 but direct evidence to quantify this effect is absent. We conducted a matched, retrospective, cohort study using a regression ...

COVID-19 resulted in an unprecedented transformation in the context of learning and teaching, wherein a significant shift in the different realms of educational attainment was observed [1]. This Special Issue in Sustainability, ...

The authors regret the legend of Fig. 2 and its corresponding colors were incorrectly displayed. Please find the attached corrected Fig. 2 to replace the original one.

In a recent timely systematic review, Chu et al. [1] assessed the effectiveness of face masks, eye protection, and physical distancing for preventing COVID-19. Because the sample sizes are not large, especially in some ...

Lee, Chieng, Lau et al. studied the effects of coronavirus disease-2019 (COVID-19) on the clinical presentation, radiological findings, and outcomes of the infection in patients with hemoglobinopathies. They found that the ...