United Kingdom, Sept. 10 -- Mandy Moore felt "super helpless" after her sons were diagnosed with RSV.

The 41-year-old actress has opened up on how her sons August 'Gus' Harrison, four, and Oscar 'Ozzie' Bennett, who turns three next month, were both diagnosed with respiratory syncytial virus at the same time in 2023.

She told PEOPLE magazine: "It was a super helpless feeling.

"I mean, we were lucky in the sense that it didn't include a hospital trip, but my husband and I were still really shook and very concerned."

RSV is a common cause of coughs and colds, and while infections usually get better by themselves, they can be serious for babies.

For babies, RSV can cause bronchiolitis, or even pneumonia.

Mandy and her husband Taylor Go...