Some hospitals in the U.S. are seeing an increase in cases of RSV and so-called "walking pneumonia." Here's what you need to know.

A rise in rates of sudden unexpected infant deaths may have been linked to an off-season surge of RSV in 2021, according to a new study.

April Nelson said the reunion between her children was "beautiful."

New CDC data updated Friday shows 25 states are experiencing ‘high’ or ‘very high’ levels of respiratory illness activity.

Jordi Vilasuso's daughter Lucy was admitted to the NICU after her RSV diagnosis.

Despite this RSV season having a "game-changing" new set of vaccinations and immunizations, doctors say uptake has lagged among adults and children.

Data from the the Centers for Disease Control and Prevention shows respiratory illnesses are elevated in 38 states.

New York City Health + Hospitals is bringing back indoor masking across its buildings in areas where patients are being cared for amid a rise in respiratory viruses.

Health officials are reporting a rise in respiratory illnesses like RSV across the U.S.

A new study found hospital admission rates were higher for RSV than for the omicron strain or influenza A/B in children presenting at Swedish emergency departments

New CDC data updated on Friday shows COVID and flu hospitalizations continue to increase across the U.S. as the CDC director says she believes we've hit the peak of RSV.

As the U.S. heads into colder weather months, when RSV cases tend to be higher, here's what you need to know about the virus including symptoms, treatments and vaccines.

Some parts of China have been experiencing a surge of respiratory illnesses such as flu and RSV, in the first winter since the country eased its COVID-restrictions.

One of the most common types of respiratory viruses that circulates this time of year is called respiratory syncytial virus, or RSV.

As millions prepare to gather for Thanksgiving, and cases of respiratory viruses tick up across the U.S., experts reveal how to stay safe and healthy over the holidays.

The CDC recently issued an alert on who should be prioritized for the drug.

Older adults who got a COVID booster and a high-dose version of the flu vaccine together may have an increased risk of stroke, according to a new FDA-funded study.

Flu and other respiratory viruses, like RSV, are starting to circulate but levels are not as high as they were this time last year, CDC data shows.

The CDC advisory committee voted to recommend the first maternal RSV vaccine that would be given between 32 and 36 weeks' gestation.

This year’s respiratory virus season is set to be a repeat of last year’s, with COVID-19, RSV and influenza impacting the health care system at the same time, per the CDC

The CDC warned Wednesday that RSV cases are increasing in infants and young children in Florida and Georgia, possibly a sign of the start of the RSV season nationally.

The U.S. Food and Drug Administration has approved the first maternal vaccine intended to help protect newborns against respiratory syncytial virus (RSV).

The CDC signed off Thursday on a new RSV shot, made up of monoclonal antibodies that mimic the antibodies the body naturally creates when fighting a virus, for infants.

A CDC advisory committee recommended approval of an RSV vaccine for adults aged 60 and older. What this means for a potential fall rollout.

Food and Drug Administration advisers voted in favor of a maternal RSV vaccine option from drugmaker Pfizer.

The FDA will decide whether or not to approve an RSV vaccine designed to protect newborns by August 2023.

Moderna announced Tuesday its RSV vaccine for older adults was about 84% effective at preventing severe disease and the company plans to ask the FDA for approval in 2023.

Seasonal flu activity remains high but is declining in most areas, according to data released Friday by the Centers for Disease Control and Prevention.

Some school districts have said indoor masking will return following winter break to prevent the spread of COVID-19, flu and RSV.

Pediatricians share their advice for parents as kids face flu, RSV and more.

After fears that a "tripledemic" would overwhelm hospitals, cases of RSV appear to be declining while infections of flu and COVID-19 increase.

A mother from Albuquerque, New Mexico, is warning about the dangers of RSV after her daughter spent 8 days hospitalized on a ventilator.

Dr. Edith Bracho-Sanchez shares tips as flu hospitalizations nearly double.

The FDA recently granted priority review to Pfizer's RSV vaccine for older adults. Here is everything you need to know.

A North Carolina mother and father say they credit a state trooper for helping to save their daughter's life when she stopped breathing after becoming sick with RSV.

Flu, RSV and COVID-19 have many symptoms that are similar, but public health experts tell ABC News how you may be able to tell the difference between the three.

Surgeon General Vivek Murthy spoke with "GMA3" about the upcoming flu season, the so-called "triple threat" and how Americans can best prepare.

Pediatric hospital beds remain near capacity, data shows.

Health officials in Riverside County, California, have reported the death of a child under age 4 due to RSV as cases rise across the U.S.