Most people recover from RSV (respiratory syncytial virus) within 1 to 2 weeks. Symptoms typically appear 4 to 6 days after exposure, peak somewhere around days 3 to 5 of illness, and gradually improve from there. The full timeline from exposure to feeling completely normal again is usually about 2 to 3 weeks total.
How RSV Symptoms Progress
RSV doesn’t hit all at once. One distinguishing feature is that symptoms tend to come in phases rather than appearing simultaneously. Early on, you’ll notice congestion, a runny nose, and mild cough. Over the next few days, symptoms can intensify, potentially including fever, wheezing, and deeper coughing as the virus moves into the lower airways. Most people hit their worst point around days 3 to 5 of active symptoms, then start turning a corner.
For otherwise healthy older children and adults, the acute phase wraps up in less than a week. Full recovery, where energy levels return to normal and the cough fades entirely, typically takes 1 to 2 weeks from when symptoms first appeared.
The Cough That Lingers
Even after you feel mostly better, a residual cough can hang around longer than you’d expect. In older adults especially, studies have found that lingering symptoms like a productive cough persist for a median of 21 days. This post-viral cough doesn’t mean you’re still sick in any dangerous sense. It’s your airways recovering from the inflammation the virus caused. Three weeks of on-and-off coughing is frustrating but normal, and it doesn’t typically require treatment beyond patience.
How Long You’re Contagious
People with RSV are usually contagious for 3 to 8 days. You can actually start spreading the virus a day or two before symptoms appear, which is part of why RSV circulates so easily. Most adults stop being contagious as their symptoms resolve.
The exception: infants and people with weakened immune systems can continue shedding the virus for 4 weeks or longer, even after symptoms have cleared. This is worth knowing if you have a newborn or immunocompromised family member at home.
When You Can Return to Normal Activities
The CDC groups RSV with other common respiratory viruses for its return-to-activity guidance. You can go back to work, school, or daily routines when both of these have been true for at least 24 hours: your symptoms are improving overall, and you haven’t had a fever without the help of fever-reducing medication.
That said, you’re likely still shedding some virus at that point. For the next 5 days after returning to activities, the CDC recommends extra precautions: wearing a well-fitted mask around others, improving ventilation, keeping your distance when possible, and practicing careful hand hygiene. After that 5-day window, you’re typically much less likely to pass the virus along.
Recovery for Infants and High-Risk Groups
Babies under 12 months, adults over 65, and anyone with a compromised immune system or chronic lung or heart conditions face a longer and potentially more complicated recovery. RSV is the leading cause of hospitalization in infants, and for those who do end up in the hospital, the typical stay runs 3 to 4 days. If intensive care is needed, that extends to about 4 to 6 days.
Infants with RSV often struggle most with feeding and breathing. Because their airways are so small, even moderate swelling can make breathing difficult. Recovery at home after a hospital stay can take another week or more before the baby is fully back to normal eating and sleeping patterns. Some infants develop a recurring wheeze that crops up with subsequent colds for months afterward.
Older adults tend to recover from the acute infection in the same 1 to 2 week window, but the lingering symptoms described above (that 3-week cough) are more common in this group. Adults with chronic lung disease like COPD may find that RSV triggers a flare that takes additional time to stabilize.
Why There’s No Way to Speed It Up
RSV is a virus, so antibiotics don’t help. There’s no antiviral medication approved for routine RSV treatment in most patients. Your immune system does the work, and recovery is largely a matter of time and supportive care: staying hydrated, managing fever, using saline drops for congestion, and resting.
For infants, the main concern is keeping them hydrated and making sure they can breathe comfortably. Suctioning mucus from the nose before feedings and using a cool-mist humidifier can help. For adults, over-the-counter cold remedies can take the edge off symptoms but won’t shorten the illness.
The realistic timeline to keep in mind: expect to feel noticeably sick for about a week, functional but not 100% for another week after that, and possibly dealing with a mild cough for up to 3 weeks total. Most people are fully back to normal well within a month.