Is RSV-A or B worse?

Overall, bronchiolitis severitydid not differ by RSV subtype. However, amongchildren with RSV-only bronchiolitis, those children with RSV-A had higher risk of intensive care treatment (OR, 1.31; 95%CI, 1.00-1.71; P=0.048) when compared with those having RSV-B.

How many RSV viruses are there?

There are two major antigenic subtypes of human RSV (A and B) determined largely by antigenic drift and duplications in RSV-G sequences, but accompanied by genome-wide sequence divergence, including within RSV-F. Human RSV is a globally prevalent cause of lower respiratory tract infection in all age groups.

What viruses are like RSV?

About HMPV

Human metapneumovirus (HMPV) can cause upper and lower respiratory disease in people of all ages, especially among young children, older adults, and people with weakened immune systems. Discovered in 2001, HMPV is in the paramyxovirus family along with respiratory syncytial virus (RSV).

Is RSV-B contagious?

RSV Transmission

People infected with RSV are usually contagious for 3 to 8 days. However, some infants, and people with weakened immune systems, can continue to spread the virus even after they stop showing symptoms, for as long as 4 weeks.

Are there different strains of RSV?


Traditionally, RSV is classified into two distinct groups or subtypes, RSV-A and RSV-B, which diverged approximately 350 years ago and are based on antigenic and sequence-based variations predominately associated with RSV G [48,49,50,51].

What does RSV cough sound like?

Children with RSV typically have two to four days of upper respiratory tract symptoms, such as fever and runny nose/congestion. These are then followed by lower respiratory tract symptoms, like increasing wheezing cough that sounds wet and forceful with increased work breathing.

When can child with RSV return to daycare?

A good rule of thumb is that they can return to daycare/school once they have had no fever for at least 24 hours (without fever medicine), they are eating and drinking well, and the cough may be present but is no longer very frequent or distressing.

Can adults catch RSV from kids?

RSV is one of the most common causes of childhood illness, infecting most children by two years of age. RSV can also infect adults. Most healthy children and older adults who get RSV will get a mild case with cold-like symptoms.

How long will you test positive for RSV?

By using a rapid test for respiratory syncytial virus (RSV) detection (Abbott TestPack RSV), a number of patients were observed, showing repeatedly positive results over a period of up to 10 weeks.

Why is RSV called syncytial?

Its name is derived from the large cells known as syncytia that form when infected cells fuse. RSV is the single most common cause of respiratory hospitalization in infants, and reinfection remains common in later life: it is an important pathogen in all age groups.

What is another name for RSV?

Respiratory syncytial (sin-SISH-uhl) virus, or RSV, is a common respiratory virus that usually causes mild, cold-like symptoms.

What is the death rate for RSV?

RSV-associated deaths among children <5 years of age are thought to be uncommon, estimated at 100-500 per year. Among US adults, an estimated 177,000 hospitalizations and 14,000 deaths associated with RSV infections occur annually.

Is RSV A Covid?

The flu, COVID-19, and respiratory syncytial virus (RSV) are all highly contagious respiratory infections caused by viruses: The flu by influenza virus, COVID-19 by SARS-CoV-2 virus, and RSV by respiratory syncytial virus. It is possible for a person to be infected with multiple viruses at the same time.

How long will you test positive for RSV?

By using a rapid test for respiratory syncytial virus (RSV) detection (Abbott TestPack RSV), a number of patients were observed, showing repeatedly positive results over a period of up to 10 weeks.

Does RSV have a barking cough?

Normally these symptoms will clear up on their own in a few days. A barking or wheezing cough can be one of the first signs of a more serious illness. In these instances, the virus has spread to the lower respiratory tract, causing inflammation of the small airways entering the lungs.

What are the first signs of RSV?

  • Congested or runny nose.
  • Dry cough.
  • Low-grade fever.
  • Sore throat.
  • Sneezing.
  • Headache.

Should I isolate if I have RSV?

When RSV infections are noted in a facility such as a hospital or nursing home, contact isolation (to minimize person-to-person spread) and hand washing by health care workers have been shown to limit spread of the virus. As with any respiratory illness, all people should cover their face when coughing and sneezing.

How long should a child stay out of daycare with RSV?

Usually 3-7 days. Typically, days 3-4 are the worst. Babies can go back to daycare when they aren’t requiring additional help (extra suctioning, breathing treatments, small frequent feeds) and are fever-free for 24 hours.

Is cold air good for RSV?

Avoidance of exposure to tobacco smoke, cold air and air pollutants is also beneficial to long-term recovery from RSV bronchiolitis. A number of vaccines to prevent this infection are currently being studied.

Can I go to work with RSV?

Don’t go to work, school, or public places if you are sick. RSV spreads quickly in large crowds. Cover your mouth and nose with your elbow when you sneeze or cough. Don’t use your hands.

How long after exposure to RSV are you contagious?

People with RSV are contagious for three to eight days after exposure. But because their immune systems aren’t as good at eliminating the virus, some infants and others with weakened immune systems are contagious for as long as four weeks, even after they no longer have symptoms.

Can you test positive for RSV?

A positive test can also confirm the presence of RSV in the community. A positive RSV test cannot, however, tell a healthcare practitioner how severe a person’s symptoms are likely to be or how long ago the patient was infected. Symptoms usually appear 4-6 days after infection.

What is the fastest way to cure RSV?

Most RSV infections go away on their own in a week or two. There is no specific treatment for RSV infection, though researchers are working to develop vaccines and antivirals (medicines that fight viruses).