Safety and immunogenicity of the ChAdOx1 nCoV-19 vaccine against SARS-CoV-2: a preliminary report of a phase 1/2, single-blind, randomised controlled trial

This is the study that you likely heard about early in the week with the promising results from the Astra Zenica Phase II vaccine trial in the UK.  Promising results indeed! Not only did the vaccine tested form antibodies at several doses, it also generated cell mediated immunity (called killer T cells). 

Contact Tracing during Coronavirus Disease Outbreak, South Korea, 2020

In this new study published in CDC’s Emerging Infectious Disease South Korean researchers found that kids younger than 10 transmit to others much less often than adults do, but the risk is not zero. And those between the ages of 10 and 19 can spread the virus at least as well as adults do.

Dexamethasone in Hospitalized Patients with Covid-19 — Preliminary Report

Among hospitalized patients with Covid-19, treatment with dexamethasone resulted in lower 28-day mortality than usual care, according to the level of respiratory support the patients were receiving, indicating a possible correlation between efficacy and the stage of infection.  Read the article.