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Alpha Coronavirus Variant Evolved to Evade Immune System

A new study led by scientists at UCSF's Quantitative Biosciences Institute and University College London found that the Alpha variant of SARS-CoV-2 ramped up production of a protein that it uses to stifle infected cells’ immune-stimulating signals, helping it evade immune detection and accelerate its transmission.

microscopic image of novel coronavirus

How Dangerous Is the Delta Variant? Here’s What the Science Says

We spoke to UCSF virologist Nadia Roan, PhD, about the latest developments in our knowledge of the Delta variant, including how the new variant spreads so efficiently, whether it causes more serious illness, and why she thinks vaccines will hold the line.

Man holding "Free COVID Vaccine" sign on street

Common COVID-19 Antibiotic No More Effective Than Placebo

A UCSF study has found that the antibiotic azithromycin was no more effective than a placebo in preventing symptoms of COVID-19 among non-hospitalized patients, and may increase their chance of hospitalization, despite widespread prescription of the antibiotic for the disease.

Prescription bottle