Covid-19: Biden aims for 70% of Americans to have at least one vaccination by 4 July

Promote COVID-19 vaccination uptake: a letter to editor

Covid-19 Vaccination and Reactivation of Varicella Zoster Virus

Introduction: After COVID-19 pandemic in 2020 that mostly affects upper respiratory tract, the scientists investigated an effective vaccine against the virus. As the vaccination of general population started some patients were visited with varicella zoster virus activation following the COVID vaccine.

Factors Related to the Acceptance and Rejection of COVID-19 Vaccination

Aims Despite various government measures, control of COVID-19 requires immediate action, including vaccine production. Given the role of vaccine acceptance factors in future planning, this study aimed to unfold the determinants of COVID-19 vaccine acceptance in Gonabad. Methods & Materials This descriptive-analytical study was performed on 292 people in Gonabad City, Iran, in 2021. The random ...

COVID-19 and dermatologists (4)

The fourth paper of review article series about COVID-19 includes a selection of interesting and useful information about this disease and dermatology. This paper contains materials published in literature in various basic fields such as epidemiology, pathogenesis, as well as clinical topics such as symptoms and treatments. The skin manifestations of COVID-19, the challenges of treating skin di...

“At least one” caching

We consider a variant of the caching problem, where each request is a set of pages of a fixed size, instead of a single page. In order to serve such a request, we require at least one of those pages to be present in the cache. Each page is assumed to have unit size and unit cost for getting loaded into the cache. We prove lower bounds on the competitive ratio for this problem in both the determ...