Tag: immune responses
COVID Science Is Moving Backwards
Paul Sax is an infectious-disease physician and professor at Harvard Medical School. Even so, when Sax’s kids asked him whether they should get the updated COVID vaccine this fall, he wasn’t really sure what to tell them. His two children are in their 20s, healthy, and at no special risk of complications from disease. Each had recovered from COVID, and thus, he reasoned, had extra immunity on top of what they’d gotten from their prior shots. Another injection would
What Did All Those COVID Infections Get Us?
I, as far as I can tell, have not yet been infected by the virus that causes COVID-19. Which, by official counts, makes me an oddball among Americans.
Granted, I could be wrong. I’ve never had a known exposure or symptoms, but contact tracing in the United States is crummy and plenty of infections are silent. I’ve taken many coronavirus tests, but not that many coronavirus tests, and it’s always possible that some of their results missed the mark.
If
Why Kids’ COVID Vaccines Aren’t Performing Like Adults’
Last Friday, Lakshmi Ganapathi’s son turned 5, and finally became eligible for his first Pfizer COVID shot. Ganapathi’s family had been anticipating that moment for more than a year, yet as of late, she can’t help but feel the slightest bit deflated. At first, the COVID vaccines’ trickle down the age brackets felt worth the wait because the shots were doing such a stellar job at blocking symptoms. The clinical trials kept delivering knockout results: 94 percent efficacy, 95 percent
Should You Get a Vaccine If You Had COVID-19?
Immune cells can learn the vagaries of a particular infectious disease in two main ways. The first is bona fide infection, and it’s a lot like being schooled in a war zone, where any lesson in protection might come at a terrible cost. Vaccines, by contrast, safely introduce immune cells to only the harmless mimic of a microbe, the immunological equivalent of training guards to recognize invaders before they ever show their face. The first option might be more instructive
Coronavirus Variants Can’t Survive on Speed Forever
If evolution is a numbers game, the coronavirus is especially good at playing it. Over the past year and a half, it’s copied itself quickly and sloppily in hundreds of millions of hosts, and hit upon a glut of genetic jackpots that further facilitate its spread. Delta, the hyper-contagious variant that has swept the globe in recent months, is undoubtedly one of the virus’s most daring moves to date. This variant is the product of unfettered transmission, and will thrive
COVID-19 Vaccine Success Could Be Measured With One Number
When Kishana Taylor welcomes her twins into the world this December, she’ll be pretty confident that they won’t be carrying the virus that causes rubella, an infection that can be disastrous in infants. Thanks to a vaccine she received as a child, Taylor, a virologist at Carnegie Mellon University, is still immune to the pathogen decades later.
She was able to confirm that in June through a simple test that searched her blood for antibodies that recognize the rubella virus,