RSV Infection (Respiratory Syncytial Virus)
RSV is a common respiratory virus that usually causes mild, cold-like symptoms but can lead to serious lung infections. It is a leading cause of bronchiolitis and pneumonia in infants and older adults.
Overview
RSV is a common respiratory virus that usually causes mild, cold-like symptoms but can lead to serious lung infections. It is a leading cause of bronchiolitis and pneumonia in infants and older adults.
Symptoms
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Causes
- •respiratory syncytial virus (RSV)
- •inhalation of infected droplets
- •touching contaminated surfaces then the face
Risk factors
- •premature infants
- •infants younger than 6 months
- •adults over age 65
- •chronic heart or lung disease
- •weakened immune systems
How it progresses
3 stages- OnsetSymptoms appear, often triggered by a known cause.Often missed
- Active phaseSymptoms peak; self-care or short treatment usually helps.
- ResolutionSymptoms ease over days to weeks with proper care.
How it's diagnosed
- •physical examination
- •nasal swab or aspirate
- •pulse oximetry to check oxygen levels
- •chest x-ray in severe cases
Treatment options
General educational information only — no dosage advice. Always follow guidance from a qualified clinician.
- •supportive care for mild symptoms
- •oxygen therapy for severe cases
- •bronchodilators to open airways
- •using saline nose drops or sprays
- •drinking plenty of fluids to prevent dehydration
- •using a cool-mist humidifier
- •managing fever with over-the-counter relievers
- •intravenous (IV) fluids for dehydration
Complications
- •Reduced quality of life
- •Worsening symptoms over time
- •Recurrence of rsv infection (respiratory syncytial virus)
Prevention
- •Wash hands frequently
- •Avoid close contact with infected people
- •Stay up to date with vaccines
- •Maintain a healthy lifestyle
- •See a clinician for routine check-ups
When to seek help
- •Symptoms persist beyond a few days
- •Symptoms interfere with daily activities
- •New or worsening symptoms appear
- •Concerning changes related to rsv infection (respiratory syncytial virus)
- struggling to breathe or rapid breathing
- blue or gray skin, lips, or fingernails
- extreme lethargy or difficulty waking up
- signs of dehydration like no wet diapers
In any emergency, call your local emergency number or go to the nearest emergency department.
Real-world questions
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- ›Can RSV Infection (Respiratory Syncytial Virus) be prevented?
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Frequently asked questions
Possible causes of RSV Infection (Respiratory Syncytial Virus) include respiratory syncytial virus (RSV), inhalation of infected droplets, touching contaminated surfaces then the face.
RSV Infection (Respiratory Syncytial Virus) is generally moderate, but severity can vary. Seek care if symptoms are severe or persistent.
Duration varies between individuals. Many cases improve with appropriate care, while others may persist longer and require ongoing management.
Some milder cases may improve with rest and self-care. If symptoms persist or worsen, consult a healthcare professional.
Consider seeing a clinician if symptoms are severe, persistent, worsening, or if you have any concerns related to general.
Sources
Information based on general medical references such as:
Last reviewed: May 2026