Lab studies show that the mutations found in COVID-19's Delta variant make the virus more resistant to existing vaccines, a potentially ominous development as the new Omicron variant starts to wend its way around the world.
Full vaccination with the Pfizer or AstraZeneca vaccines still produces enough antibodies to neutralize Delta, British researchers found.
Just one day after the first Omicron case was reported in the United States, federal officials announced a second case on Thursday, this time in a Minnesota man who had traveled to an Anime convention in New York City in November.
The U.S. Centers for Disease Control and Prevention said it is working on the case with the Minnesota Department of Health and the New York City Department of H...
Children and teenagers vaccinated against the mumps virus have accounted for one-third of infections in recent years, a new U.S. government study finds.
The reasons are unclear, and experts stressed that routine childhood vaccination remains the best weapon against mumps -- a contagious infection that is usually mild, but can cause serious complications.
People who recovered from a severe case of COVID-19 may have more to worry about: New research finds that patients hospitalized with COVID are 2.5 times more likely to die within the year than people who never contracted the coronavirus.
They also are nearly twice as likely to die as people who had a mild case of COVID, researchers say.
Which coronavirus vaccine is best at beating COVID-19 -- Moderna or Pfizer?
New research hands that honor to Moderna: In what is billed as the first head-to-head comparison of the two shots, researchers analyzed the health records of nearly 440,000 U.S. veterans who received one of the two vaccines between early January 2021 and mid-May 2021. All were followed for 24 weeks.
With HIV a continuing threat to women's health, the World Health Organization (WHO) has approved the first long-acting device to protect women from sexually transmitted HIV.
The device is a vaginal ring made of silicone elastomer, a flexible rubber-like material that makes it easy to insert and comfortable to use. The ring releases the antiretroviral drug dapivirine into the vagina slowly...
The often debilitating condition known as chronic fatigue syndrome appears to be common among COVID-19 long-haulers.
That’s the key takeaway from a fresh look at patients who continue to struggle with severe fatigue, poor sleep, brain fog, muscle aches and pains long after their initial -- and often mild -- COVID infection has otherwise resolved.
Protection can gradually fade after a second dose of the COVID-19 vaccine by Pfizer-BioNTech, which suggests that a booster shot might be necessary, researchers report.
They analyzed data from more than 80,000 adults in Israel, average age 44, who had no previous evidence of infection and who had received a PCR test at least three weeks after their second shot of the two-dose Pfizer vacc...
Republican lawmakers in several states are pushing vaccine mandate exemptions for workers who have so-called natural immunity due to a previous COVID-19 infection.
That's despite evidence that vaccination can reduce the risk of COVID-19 even for those with a history of infection, and the fact that there's no easy way to assess the protection provided by prior infection, CBS News ...
Though airborne exposure causes most cases of COVID-19, the virus lurks on objects near the beds of infected nursing home patients, according to a new study.
"Coronavirus is ubiquitous and persistent in the rooms of nursing home residents with COVID-19, and highlight the ongoing importance of rigorous cleaning and protection of staff and visitors," first author Dr. Lona Mody said in a Uni...
Lyss Stern lost her sense of smell when she was diagnosed with COVID-19 in March 2020, and it still hasn't returned.
Stern, 47, a New York City author and mother, has seen countless doctors and taken many types of medicine, vitamins and supplements to get her sense of smell back. She also undergoes acupuncture regularly and saw an energy healer -- all to no or very little avail.
Pfizer announced Tuesday that it has asked the U.S. Food and Drug Administration to approve the emergency use of its new antiviral pill in people at high risk for severe COVID-19.
"With more than 5 million deaths and countless lives impacted by this devastating disease globally, there is an urgent need for life-saving treatment options. The overwhelming efficacy achieved in our recent cli...
The COVID-19 pandemic has offered some lessons on respiratory disease transmission, and now a new review suggests that hospitals could use those insights to create even smarter infection-control policies.
The review, published Nov. 9 in the Annals of Internal Medicine, suggests that some longstanding infection-control tactics at hospitals are "outdated."
The discovery that up to 80% of white-tailed deer in Iowa may be infected with COVID-19 has scientists worried that the animals could become a reservoir for variants that could come back to haunt humans.
In the new study, samples were collected lymph node samples from hundreds of dead deer across the...
Coronavirus cases have plunged by 60% since mid-September's Delta-driven peak, U.S. health officials said earlier this week. But with winter on the way, they warned that Americans still need to protect themselves and others against COVID-19.
"We are now heading in the right direction ... but with cases still high, we must remain vigilant heading into the colder, drier winter months," Dr. ...
By now, it would seem that there is almost no part of the body that the new coronavirus does not strike, but new research adds one more: COVID-19 may be able to infect the inner ear and affect hearing and balance.
There have been reports of COVID-19 patients with symptoms such as hearing loss, ringing in the ears (tinnitus), dizziness and balance problems, so Massachusetts Institute of Te...
There are two ways that HIV patients' bodies can keep the virus under control after they stop antiretroviral therapy, a new study shows.
The findings could point to ways to help people with HIV keep the virus in remission without having to keep taking medications that can have long-term side effects, according to researchers at the U.S. National Institute of Allergy and Infectious Disease...
A deal for Merck's COVID-19 pill to be made and sold cheaply in poor nations has been reached with Medicines Patent Pool, a United Nations-backed nonprofit organization.
The royalty-free license means that companies in 105 countries, mostly in Africa and Asia, can sublicense the formulation for the antiviral pill molnupiravir and start making it, the New York Times reported.
Antibody infusions help keep high-risk COVID-19 patients out of the hospital, but getting the therapy can be a challenge. One U.S. health system has found a creative way to address the problem: home infusions administered by paramedics.
Researchers found that the tactic was feasible, delivering antibody infusions to 144 COVID-19 patients in their homes over three months earlier this year....
Obese people have a tougher time fighting COVID-19, even if they have a milder form of the virus, a new study finds.
Researchers looked at more than 500 patients who tested positive for COVID but didn't require hospitalization. Teens and adults who were overweight or obese had more symptoms, including cough and shortness of breath, than those of normal weight.
Watch closely if your kids appear to have a common cold this fall or winter. It could instead be respiratory syncytial virus, known as RSV, and that makes it more likely to progress to a serious lower lung infection.
RSV is back in force this year after a reprieve while many stayed home last year because of the COVID-19 pandemic, according to experts at Penn State Health.
In some heartening news on the vaccine front, two-thirds of American parents of children ages 5 to 11 plan to get their youngsters vaccinated when COVID-19 shots are approved for that age group, a new survey shows.
"While we're encouraged to see that a majority of parents intend to vaccinate their children against COVID-19 once they are eligible, there is clearly more work to be done to h...
It could be a bad flu season this year — and for a couple of years to come — in places in the United States where COVID-19 restrictions like social distancing and masking have been lifted, researchers warn.
These sorts of measures caused flu cases to decline by more than 60% within the first 10 weeks after COVID-19 lockdowns were implemented in 2020, Columbia University researchers fo...
In a development that could mean Johnson & Johnson might encounter resistance over its application for authorization of a booster shot of its coronavirus vaccine, a new analysis filed by the U.S. Food and Drug Administration on Wednesday suggests the company's evidence may not be strong enough for approval.
A key test used by the company to measure immune response from a booster shot six ...