The coronavirus is not a shape shifter like the flu virus, but it could become vaccine resistant over time. That prompts researchers to urge vigilance.
People who already have dental problems may see them aggravated by encounters with the coronavirus, some experts suggest.
Keeping children masked and separated is necessary. It could also undermine their bodies’ ability to learn how to fight pathogens.
Blood samples from recovered patients suggest a powerful, long-lasting immune response, researchers reported.
Working out may enhance the immune system’s ability to target and eradicate cancer cells, a study in mice suggests.
The test detects the response of T cells to the virus — an arm of the immune system that may be just as important as antibodies to preventing reinfection.
A provocative study suggests that certain colds may leave antibodies against the new coronavirus, perhaps explaining why children are more protected than adults.
Recent studies have created doubts about an agent in cytokine storms, and suggest that treatments for it may not help.
The research suggests that children clear the infection much faster than adults and may help explain why many don’t become seriously ill.
Experts say it’s normal for levels of antibodies to drop after clearing an infection, and that they represent just one arm of the immune response against a virus.
New research found ‘autoantibodies’ similar to those in lupus and rheumatoid arthritis patients. But patients may also benefit from treatments for those autoimmune diseases.
A study in Mali suggests that malaria parasites hide out during the dry season by altering the properties of red blood cells.
A case in Nevada has spurred new concerns that people who have recovered from the infection may still be vulnerable. That’s unlikely, experts say.
A network of scientists is chasing the pandemic’s holy grail: an antibody that protects against not just the virus, but also related pathogens that may threaten humans.
The C.D.C. and leading experts have concluded, using different scientific methods, that as many as 90 percent of Americans are still vulnerable to infection.
The secret may lie in an “innate” immune response that targets unrecognized invaders, scientists say.
The muscles from his buttock down to his calf felt as if they were on fire. He saw countless specialists, but nothing really seemed to help. What could it possibly be?
George Washington University Hospital invited me to participate in Moderna’s vaccine trial because I am triple-risk: a Black woman, a Type 1 diabetic and asthmatic.
SARS-CoV-2 has been slowly changing in small ways, without getting more dangerous.
A silver-bullet vaccine is far from guaranteed. But it’s also not the only way out of the pandemic.
Why exposure to other germy kids might matter.
It’s not just the lungs — the pathogen may enter brain cells, causing symptoms like delirium and confusion, scientists reported.
Scientists float a provocative — and unproven — idea: that masks expose the wearer to just enough of the virus to spark a protective immune response.
As we age, the immune system begins to shift into a heightened state of alert, dialing up inflammation and running out of certain immune cells.
New data in hand, the W.H.O. recommended that doctors give the drugs to critically ill patients worldwide.
Women produce a more powerful immune response than do men, a new study finds.
In dozens of other patients who suppress the virus without drugs, it seems to have been cornered in parts of the genome where it cannot reproduce, scientists reported.
Two new studies of elite athletes found that working out amplifies the immune response to a flu shot.
While microscopic and little known, predatory bacteria are among the world’s fiercest and most effective hunters.
Doctors offer advice on when and where to safely get vaccinated.
A clinical trial showed that remdesivir helped hospitalized patients. Now researchers are asking whether when the drug is paired with another antiviral drug, patients will recover faster.
New research indicates that human immune system cells are storing information about the coronavirus so they can fight it off again.
Many Covid-19 patients may be dying from their immune response to the virus, not from the virus itself. Can science figure out how to save them?
Some people carry immune cells called T cells that can capitalize on the virus’s resemblance to other members of its family tree.
The company has received a $1.6 billion grant from the government’s Operation Warp Speed to have 100 million doses ready by early 2021.
How do you sign up? Will you get paid? Who will cover the costs if you get sick? Here’s a look at the basics.
Studies of patients with severe cases of Covid-19 show the immune system lacks its usual coordinated response.
Scientists need to show us the data. And that’s exactly what they’re working on.
Dropping antibody counts aren’t a sign that our immune system is failing against the coronavirus, nor an omen that we can’t develop a viable vaccine.
Commingling tissues and blood would normally prompt a massive immune response. These deep sea lovers found a workaround.
Certain vaccines may provide broad protection against infections. But new research doesn’t prove these vaccines can turn back the coronavirus, experts said.
A laboratory experiment hints at some of the ways the virus might elude antibody treatments. Combining therapies could help, experts said.
Declining antibody levels do not mean less immunity, experts say. Besides, two widely used tests may detect the wrong antibodies.
An extinct version of the smallpox virus dating to 1,400 years ago prompts speculation about viruses becoming more lethal over time.
Researchers have now reported data from early (and small) clinical trials of four candidate COVID-19 vaccines.
So far, the data is positive. The vaccines appear to be generally safe, and they spur immune responses against the novel coronavirus, SARS-CoV-2. But whether these immune responses are enough to protect people from infection and disease remains an important unknown.
The four candidates are now headed to larger trials—phase III trials—that will put them to the ultimate test: can they protect people from COVID-19 and end this pandemic?
Reports of reinfection instead may be cases of drawn-out illness. A decline in antibodies is normal after a few weeks, and people are protected from the coronavirus in other ways.
The vaccine, developed by government scientists and Moderna, a biotech company, appeared safe and provoked an immune response in 45 people in a study.
Some experts say a vaccine puffed in the nose would be better at protecting people from infection. But nasal vaccines won’t be ready right away.
In a disturbing parallel to H.I.V., the coronavirus can cause a depletion of important immune cells, recent studies found.
That study about dexamethasone has arrived with a big asterisk: While it appears to help severely ill patients, it harms others.