“These promising data add to the evidence supporting GSK’s RSV vaccine and could help expand protection to more adults at risk from RSV disease,” the company’s chief scientific officer, Tony Wood, Ph.D., said in a release. “They also provide valuable insights into the potential impact of a second dose for certain populations.”

Pfizer’s Abrysvo is the first respiratory syncytial virus vaccine that can be used for adults less than 50 years of age. Tuesday’s label expansion covers younger adults who are deemed at higher risk of RSV-related lower respiratory tract disease.

The US pharma giant Pfizer recently announced that its respiratory syncytial virus (RSV) vaccine Abrysvo has received FDA approval in adults aged 18 to 59 who are at an increased risk of developing lower respiratory tract disease caused by RSV (RSV-LRTD).

While it’s a win for Pfizer over GSK and its RSV vaccine Arexvy, which is approved for those 50 and older, it’s difficult to determine how much advantage will be gained from the nod as the Centers for Disease Control (CDC) will have to sign off on Abvrysvo's use in the wider age group.

The U.S. Food and Drug Administration on Tuesday approved Pfizer's RSV vaccine for the prevention of lower respiratory tract disease caused by RSV in adults aged 18 to 59 at increased risk of the disease.

Abrysvo (Respiratory Syncytial Virus Vaccine), the company’s bivalent RSV prefusion F (RSVpreF) vaccine, to prevent lower respiratory tract disease (LRTD) caused by RSV in individuals 18 through 59 who are at high risk.

Approval of Pfizer's Abrysvo in certain adults aged 18 to 59 years old will substantially expand the number of people eligible for vaccination with the shot.

On Tuesday, the US Food and Drug Administration approved Pfizer’s respiratory syncytial virus (RSV) vaccine, Abrysvo, for people 18 to 59 who are more vulnerable to the virus.

Abrysvo is the first vaccine for the respiratory syncytial virus that is indicated for adults younger than 50, the drugmaker said.