Coronavirus

Approaches include tailored nanoparticles, chimeric proteins, virus cocktails

Six patients in the United States have symptoms similar to those seen after AstraZeneca immunizations in Europe

Two researchers explain the importance of rigorously designed studies

Some scientists suggest halving the dose might reduce risks and help protect more people from COVID-19

First real-world data estimate Chinese vaccine is 50% effective in city where P.1 variant is widespread

Vaccine trial participants call for review of EpiVacCorona after study they ran found they had no virus-blocking antibodies

World Health Organization team favors natural jump from animal host into people, but search for the earliest cases of COVID-19 continues

Institutional support not enough, many say

Researchers propose a mechanism and a treatment for possible deadly side effect seen in at least 30 European vaccine recipients

Government seeks to accelerate vaccination as second wave ravages several states

Equipment provided by U.S. government fails to squeeze extra doses from Pfizer and Moderna vials

Company still claims powerful protection against disease but scientists want to see all the data before judging vaccine plagued by missteps

Expert board says company presented 'outdated information' in press release about large efficacy trial

SARS-CoV-2 and its treatments may turn the normally harmless Aspergillus fungus deadly

Based on trial in United States and South America, company claims 79% efficacy against symptomatic COVID-19 cases for troubled but low-cost vaccine

Infected cats and dogs experience serious symptoms, but it’s unclear whether the virus is causing them