Spain has set a new daily infection record as citizens seeking to determine whether they are contagious ahead of Christmas gatherings endured long queues amid a shortage of tests.
A third dose of both the AstraZeneca and Pfizer-BioNTech COVID-19 vaccines significantly increased the immune response to the omicron variant, according to a new study by University of Oxford researchers. The laboratory study, which hasn’t been peer reviewed yet, compared antibody levels in blood samples from people who received two doses of vaccine with samples…