RSV (Respiratory Syncytial Virus) is responsible for bronchiolitis and pneumonia. It mainly attacks infants and the elderly. The latter are at greater risk of developing severe forms of these illnesses.

Health risks associated with RSV

In infants, RSV often leads to bronchiolitis. It causes inflammation of the lungs. The most common symptoms of this disease are :

• A persistent cough;
• Breathing difficulties;
• Excessive fatigue;
• Wheezing.

Pneumonia can also occur, aggravating the situation. In this case, hospitalization is often essential.

In adults, RSV leads to serious illnesses such as chronic bronchitis, with respiratory complications. These conditions often require intensive care. People suffering from the following illnesses should beware of this virus:

• Heart disease ;
• Lung diseases ;
• Other chronic conditions.

It can rapidly deteriorate their health.

RSV vaccines

There are 2 vaccines against RSV.

• GSK’s Arexvy;
• Abrysvo from Pfizer.

Let’s see how they differ.

Arexvy (GSK)

This vaccine is intended for adults aged 60 and over. It protects against severe respiratory illness caused by RSV. It has been developed using recombinant protein technology. It stimulates a strong, long-lasting immune response. Its efficacy has been proven in clinical trials. Hospitalizations and cases of pneumonia caused by RSV have been significantly reduced.

Arexvy is injected intramuscularly. A single dose is enough to protect against the virus all winter long. This is the period when RSV circulation is highest.

Abrysvo (Pfizer)

Abrysvo is intended for adults aged 60 and over, and for pregnant women. It protects infants through maternal vaccination. The antibody is transmitted to the fetus when the mother is vaccinated between the 32nd and 36th weeks of pregnancy. The baby is then protected from birth.

The vaccine’s effectiveness has also been proven in clinical studies. The onset of severe RSV symptoms and hospitalizations have been reduced in the elderly. It also provides solid protection for infants during the first few months of life.

Vaccine side effects

Like all vaccines, Arexvy and Abrysvo can have side effects. The most common side effects are

• Pain at the injection site ;
• Headaches ;
• Muscle pain ;
• Fatigue.

They are generally of moderate intensity. What’s more, they disappear after a few days.

Why are these vaccines important?

RSV is a major health hazard for people at risk during winter. Vaccines prevent the onset of severe forms of the virus. They should reduce mortality and morbidity rates associated with the virus. They should also reduce pressure on hospitals and intensive care units. In addition, vaccination of pregnant women with Abrysvo reduces the rate of hospitalization of newborns.

Conclusion

RSV causes illness of varying severity, especially in infants and the elderly. Arexvy and Abrysvo vaccines reduce the number of severe cases and hospitalizations associated with this virus. Their appropriate use in at-risk groups helps protect the most vulnerable populations, and limit the spread of RSV during the winter season.