Articles on Coronavirus

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A new brain-imaging study finds that participants who had even mild COVID-19 showed an average reduction in whole brain sizes. Kirstypargeter/iStock via Getty Images Plus

Even mild cases of COVID‑19 can leave a mark on the brain, such as reductions in gray matter – a neuroscientist explains emerging research

New research offers insights into the brain after COVID-19 that may have implications for our understanding of long COVID-19 and how the disease affects our senses of taste and smell.
The CDC’s new recommendations have caused consternation among the public, the media and even among doctors. Justin Paget/DigitalVision via Getty Images

Clarifying the CDC’s COVID‑19 quarantine and isolation guidelines – an infectious disease doc looks at the latest research

The CDC’s controversial recommendation changes are based on new studies showing that most omicron transmission takes place within five days of the onset of illness.
Political cartoons and memes have made it clear that if there’s something to agree about on all sides of the political spectrum, its that fat people are an easy target. (Shutterstock)

Mask or no mask: Stop using fat people in political cartoons

Fat people need to be empowered to critique the very groups so willing to instrumentalize their bodies for political gain.
COVID-19 will not be the last infectious disease event of our time. We need to prepare for the next challenge with evidence and knowledge. (Shutterstock)

Future infectious diseases: Recent history shows we can never again be complacent about pathogens

Before COVID-19, clean water, antibiotics and vaccines had made us complacent about infectious disease. Infection control can no longer be taken for granted. We must be prepared for future pandemics.
High-density housing became popular as the population of Silicon Valley exploded, making affordable housing scarce. Bob Sacha/Corbis Documentary via Getty Images

Affordable housing – in pandemic times, what works and what doesn’t?

Housing affordability has been an important public policy issue since the onset of the pandemic. Economist Emily Hamilton explains the research on some popular affordable housing policies.
Supporters cheer on truck drivers in the “freedom convoy” headed for Ottawa from an overpass in Kingston, Ont., on Jan. 28. THE CANADIAN PRESS/Lars Hagberg

For some, ignorance is bliss; for others, ignorance is something else

Our age of agnosis is increasingly coming into contact in ways beyond historical standards and recorded memory. Empathy, not apathy, is needed now more than ever before.
Researchers are working to develop vaccines that provide long-term immune protection from COVID-19. Marko Geber/Digital Vision via Getty Images

How long does protective immunity against COVID‑19 last after infection or vaccination? Two immunologists explain

Because COVID-19 is a relatively new virus, researchers still aren’t sure exactly how long vaccines and prior infections provide protection.

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