The paper was retracted from its journal due to ethical and methodological issues.

A new study published this week found severe COVID-19 infections from the first wave of the pandemic could double the risk of heart attack and stroke.

Former President Trump is disputing a report that, during the COVID-19 pandemic, he secretly sent Vladimir Putin a COVID-19 testing kit for his personal use.

The FDA has authorized the first over-the-counter combination COVID-19 and flu test outside of emergency use, which delivers results at home in about 15 minutes.

Starting Thursday, Americans can order four free at-home COVID tests from the federal government ahead of respiratory virus season.

Former New York Gov. Andrew Cuomo began his public testimony before Congress on his COVID-19 nursing home policies on Tuesday.

Updated COVID-19 vaccines are arriving for the fall and winter season. Experts say you should get vaccinated, but you may not need to rush to receive the shot.

More than four years after the start of the COVID-19 pandemic, some immunocompromised and disabled Americans have changed their way of living completely to survive.

The U.S. government is restarting the free at-home COVID tests program this month as federal officials prepare for the upcoming fall and winter respiratory virus season.

The FDA approved and granted emergency use authorization Thursday for updated COVID-19 vaccines for the upcoming fall and winter season.

A new study from NYU Langone found that children and teens with long COVID may experience different symptoms depending on their age.

At least 40 athletes tested positive for COVID at the Summer Olympic Games in Paris, according to the WHO. Experts say the Games are actually a COVID "success" story.

A new NIH-supported study found that routine blood tests were not reliable to diagnose long COVID due to a lack of differences in blood biomarkers.

More than half of U.S. states are reporting 'very high' levels of COVID activity, according to wastewater data from the Centers for Disease Control and Prevention.

As students get ready to head back to class across the U.S. -- and COVID-19 cases keep trending upward -- are schools ready to handle the virus?

Noah Lyles’ exuberant walkout for the 200-meter final gave little indication he was among the dozens who have tested positive for COVID or other respiratory illnesses.

A new CDC report found that COVID-19 is now the 10th leading cause of death in 2023, down from the 4th leading cause of death in 2022.

Those opposing the bill say it threatens protesters from expressing their views anonymously and poses a health risk with COVID-19 on the rise.

As Tim Walz joins Kamala Harris on the Democratic presidential ticket, critics are blasting the governor for how he handled a massive COVID-19 fraud scheme in his state.

The White House said it will provide regular updates on the president's status "as he continues to carry out the full duties of the office while in isolation."

Amid an expected "bump" in summer COVID-19 cases, data indicates the southern and western U.S. are seeing the largest increases.

Colorado Governor Jared Polis appeared on ABC's "This Week" Sunday.

Second gentleman Doug Emhoff is asymptomatic and continuing to work remotely, his office said.

A NIH-sponsored clinical trial has begun testing a nasal COVID-19 vaccine. Here's what you need to know about the possible next generation of shots.

Dr. Anthony Fauci said he never considered resigning, despite death threats and backlash from White House advisers over his handling of the pandemic.

Five people have been charged in connection with an alleged plot to bribe a juror with $120,000 cash during a federal trial over pandemic relief fraud.

Dr. Fauci discusses advising Former President Trump during the height of the pandemic, serving under seven presidents as NIAID director.

Early indicators show COVID-19 cases may be increasing across the U.S. this summer. Experts say this is why you shouldn't be concerned.

House Republicans grilled Dr. Anthony Fauci at a hearing on Monday as they continue to scrutinize his COVID-19 response and examine theories of the virus's origin.

Disabled North Carolina residents say a mask ban that is under consideration in the state legislature would make it harder for them to access parts of their communities.

A new offshoot of omicron, KP.2, has become the dominant variant in the U.S. Experts are predicting the country may see a mild "swell" of cases this summer.

Weekly COVID hospitalizations have hit their lowest level ever reported since the pandemic began, according to data from the Centers for Disease Control and Prevention.

A new CDC report published early Thursday found U.S. life expectancy rose in 2022 after two years of declines and following a drop in COVID deaths.

Four years after the WHO declared the COVID-19 outbreak to be a pandemic, researchers say much is still not understood about a common complication: long COVID.

Monday marks the 4-year anniversary of the WHO declaring the COVID global outbreak to be a pandemic. Here's a look at the virus in the U.S. by the numbers.

Monday marks the 4-year anniversary of the World Health Organization declaring the COVID outbreak a pandemic. ABC News takes a look back at some of the key moments.

Paxlovid has been shown to reduce the risk of severe COVID in high-risk patients, but those who could most benefit from the drug aren't getting it.

The House panel probing the response to the COVID-19 pandemic has subpoenaed former New York Gov. Andrew Cuomo over his handling of nursing homes during the pandemic.

People who are recovering from COVID-19 no longer need to remain isolated for five days after symptoms end, according to new guidance from the CDC.

Small study shows a possible reason some long covid patients experience "brain fog" - a discovery that could help the ongoing research for better tests and treatments.