Respiratory Syncytial Virus (RSV): Doctor’s guide

Summary: RSV (Respiratory Syncytial Virus) is a common yet potentially serious respiratory infection, especially for infants, older adults, and immunocompromised individuals. While it often mimics a cold, it can quickly escalate to severe breathing issues in high-risk groups. Prevention through handwashing, avoiding crowds, and new options like monoclonal antibodies has improved care. It typically begins innocuously. A bit of nasal congestion, perhaps a slight cough. Maybe your infant seems more irritable than usual. You dismiss it—until the wheezing begins or the temperature rises. Suddenly, that simple sniffle has a diagnosis: Respiratory Syncytial Virus, or RSV. For new parents, grandparents, or anyone trying to avoid the seasonal onslaught of winter illnesses, comprehending RSV is essential. It's one of those stealthy viruses most people contract eventually—but for certain groups, particularly infants and seniors, it can be significantly more than an inconvenience. Here's a comprehensive overview of what you should know, from a medical perspective—without drowning you in technical terminology.   Note: This content is for general informational purposes only and does not constitute medical advice, diagnosis, or treatment. RSV can cause rapid deterioration in infants. If your child has difficulty breathing, blue lips, or is lethargic, call 000 immediately. Telehealth consultations are limited by the inability to perform physical examinations. We recommend sharing your consultation summary with your child's regular GP and bulk billing is available for eligible patients during Medicare-defined periods; otherwise, private fees apply.  

What is RSV?

RSV, or Respiratory Syncytial Virus, is a widespread respiratory infection that targets the lungs and breathing pathways. For most adults and older children with healthy immune systems, symptoms mimic a standard cold. However, for babies, elderly individuals, and immunocompromised people, RSV can be considerably more dangerous, potentially progressing to pneumonia or bronchiolitis (swelling of the small lung airways). Consider this fact: Almost every child will have contracted RSV before reaching their second birthday. That's how prevalent it is. But prevalence doesn't equate to harmlessness.

Who's most at risk for RSV?

While RSV can infect anyone, certain populations face greater risks when infected. The most vulnerable include:

• Newborns and infants, particularly those born prematurely or with existing cardiac or pulmonary conditions
• People over 65 years old
• Individuals managing chronic health conditions (such as asthma, COPD, or heart disease)
• Those with compromised immune function, including patients or organ transplant recipients

Though most RSV infections remain mild, these high-risk demographics may require hospitalisation and, in uncommon instances, face life-threatening complications.

How does RSV spread and what causes it?

Similar to other respiratory infections, RSV transmits through droplets expelled during coughs or sneezes. It also adheres to surfaces—doorknobs, children's toys, mobile phones—surviving for hours. Touching your face after contacting these surfaces creates a direct pathway to infection. Childcare centers, educational institutions, and crowded homes become transmission hotspots. Since individuals can spread the virus before symptoms appear, complete avoidance proves challenging.

RSV symptoms: What RSV looks like

The complicating factor? RSV initially presents much like an ordinary cold. Watch for these indicators:

• Nasal discharge
• Persistent cough or sneezing
• Reduced hunger
• Mild to moderate fever
• Wheezing or laboured breathing (a concerning sign)

In babies, symptoms may manifest more subtly—increased fussiness, unusual lethargy, or feeding difficulties. If an infant suddenly refuses feeds or exhibits rapid breathing (especially with visible abdominal movement), medical consultation becomes necessary.

How is RSV diagnosed?

Medical assessment typically begins with physical examination and symptom evaluation. When RSV seems likely—especially among high-risk patients—doctors may recommend nasal swab testing for confirmation. More severe cases might warrant chest radiography or oxygen saturation monitoring to exclude complications such as pneumonia.

RSV treatment: What can you do?

The unvarnished reality: no specific medication exists for RSV. Most infections resolve independently with supportive measures—maintaining hydration, getting adequate rest, and perhaps using humidification to relieve congestion. For more acute cases, particularly involving infants or elderly patients, hospitalisation might become necessary. This could include oxygen supplementation, intravenous fluids, or rarely, ventilator support in extreme situations. Recent preventative therapies, including monoclonal antibodies (detailed below), are transforming treatment approaches—especially for infants.

RSV prevention: What actually works?

While complete avoidance isn't realistic, practical precautions can minimise exposure risk:

• Regular and thorough handwashing (crucially important)
• Limiting proximity to sick individuals
• Regular disinfection of shared surfaces
• Not sharing eating utensils, drinking vessels, or infant pacifiers
• Keeping babies away from crowds during peak RSV season (typically autumn through early spring)

RSV prevention for babies: What's new?

This area has seen remarkable advancement. Recent scientific developments have introduced game-changing preventative options:

• Nirsevimab: A long-acting monoclonal antibody immunisation administered before RSV season. It helps prevent severe disease and is particularly recommended for newborns and vulnerable infants.
• Palivizumab: An established option for high-risk babies (such as premature infants or those with congental heart disease), requiring sequential monthly injections throughout RSV season.
• Maternal RSV vaccination: Administered during the third pregnancy trimester, providing passive protection for newborns during their initial vulnerable months.

Consult your paediatrician about which approaches suit your child's specific needs. These innovations herald a new chapter in RSV prevention.

When to consult a GP:

• Mild fever that is managed with medicines.
• Decreased appetite but still drinking some fluids.
• Persistent cough without breathing difficulty.

MEDICAL EMERGENCY (Call 000 immediately):

• Do not wait for a GP appointment if your child shows signs of respiratory distress:
• Struggling to breathe: Ribs sucking in, stomach pumping, or grunting noises.
• Colour changes: Blue or grey tint to the lips, tongue, or fingernails.
• Dehydration: No wet nappies for 12 hours or crying without tears.
• Alertness: Unusually drowsy, hard to wake, or limp.

How Hola Health may be able to help

Hola Health is an Australian telehealth platform that connects you with registered doctors and nurse practitioners - from the comfort of your home, at a time that suits you. Depending on your situation, a Hola Health clinician may be able to help with:

• 24/7 General medical advice via telehealth doctor consult - talk through symptoms or health concerns with a registered doctor or medical practitioner.
• Medical certificate online - for work or personal leave, when clinically appropriate
• Referrals to specialists - or in-person services when needed
• Online prescriptions - at a clinician's discretion and where clinically suitable.
• Pathology or imaging requests - when assessed as appropriate by your treating clinician.
• Mental health Care Plan - Mental Health Treatment Plans (referral to your regular GP may be recommended for ongoing care).

Hola Health clinicians are AHPRA-registered Doctors and medical practitioners in Australia. They will always recommend an in-person consultation, specialist referral, or emergency care if that is in your best interest.

Note: Telehealth is not suitable for all conditions. Hola Health does not replace your regular GP, specialist, or emergency services. If you are unsure whether telehealth is right for your situation, we recommend speaking with your usual healthcare provider. In emergencies, call 000.

Final thoughts: What you shouldn't ignore about RSV

Though RSV remains common, its commonality doesn't diminish potential seriousness. For most people, it manifests as an uncomfortable period of coughing and nasal congestion. But for our youngest and oldest family members, conditions can deteriorate rapidly. Encouragingly, preventative and management resources have never been more advanced. Between improved preventative options, telehealth accessibility, and heightened awareness, today's families have unprecedented tools to navigate RSV season intelligently and safely. So if you're reading this while comforting a congested baby or researching symptoms during early morning hours—take a deep breath. Remember you're not alone. Ask questions, trust your parental intuition, and utilise your healthcare providers.