By next RSV season, US may have its first vaccine

It’s shaping up to be a severe season for respiratory syncytial virus infections — one of the worst some doctors say they can remember. But even as babies struggling to breathe fill hospital beds across the United States, there may be a light ahead: After decades of disappointment, four new RSV vaccines may be nearing review by the US Food and Drug Administration, and more than a dozen others are in testing.