Respiratory Syncytial Virus (RSV) is a common respiratory illness, especially among infants and young children. It often causes cold-like symptoms, including fever. Knowing how long an RSV fever typically lasts helps caregivers manage the illness and identify when medical attention is needed.
How Long RSV Fever Typically Lasts
An RSV fever lasts for a few days, often peaking within the first 2 to 5 days of the illness. While the overall RSV infection can persist for 1 to 2 weeks, the fever component is generally shorter-lived. Low-grade fevers, around 101°F to 102°F, occur with RSV and may come and go during this period.
The duration of the fever can vary depending on the individual’s age and general health. Infants under six months or children with underlying health conditions may experience a longer or more pronounced fever. Older children and adults experience milder, cold-like symptoms, including a low-grade fever that resolves quickly.
When to Seek Medical Attention for RSV
While many RSV cases can be managed at home, some warning signs require immediate medical attention. Difficulty breathing is a concern, manifesting as wheezing, rapid breathing, or visible effort (e.g., nasal flaring, retractions). A bluish tint to the lips or skin, known as cyanosis, signals a lack of oxygen and requires urgent care.
Signs of dehydration, such as fewer wet diapers in infants or a lack of tears, also warrant medical evaluation. Decreased activity or alertness, irritability, or a reduction in eating or drinking also indicate medical advice is needed. For infants younger than 3 months (12 weeks), any fever of 100.4°F or higher should prompt a call to a healthcare provider. For older children, a fever repeatedly rising above 104°F, or a fever over 102°F that lasts more than two days, also requires medical consultation.
Managing RSV Fever at Home
Managing an RSV fever at home focuses on supportive care to alleviate symptoms and ensure comfort. Providing adequate fluids is important to prevent dehydration, which can be a complication of RSV. For infants, offering smaller, more frequent breastfeeds or bottle feedings can help maintain hydration, especially if congestion makes feeding difficult.
Over-the-counter fever reducers, such as acetaminophen or ibuprofen, can be used to manage fever and discomfort, following age-appropriate dosing guidelines. Aspirin should never be given to children due to the risk of Reye’s syndrome. Maintaining a comfortable room temperature and dressing the child in comfortable, light clothing can also aid in fever management and comfort. Ensuring sufficient rest allows the body to conserve energy and support the immune system in fighting the virus.