Seasonal Respiratory Viruses — Flu and RSV
Why these viruses appear in seasons
In Australia, respiratory viruses such as influenza (flu) and respiratory syncytial virus (RSV) are more common during cooler months. Seasonal changes influence how often people gather indoors, how long viruses survive in the environment, and how easily infections spread. The intensity and timing of each season vary, which is why one winter may feel mild while another brings widespread illness.
How flu and RSV spread in everyday life
Flu and RSV spread mainly through respiratory droplets released when someone coughs, sneezes, or talks closely with others. They can also spread via hands and shared surfaces. Everyday settings such as homes, schools, childcare, workplaces, and public transport play a significant role. Because multiple respiratory viruses circulate at the same time, similar illnesses often move through families and communities together.
Common symptoms and how they differ
These infections often begin with a general sense of feeling unwell before localising to the airways. Typical symptoms include runny or blocked nose, sore throat, cough, fever or chills, headaches, body aches, and pronounced fatigue. RSV frequently causes heavy nasal congestion and cough, and in some people — especially young children — noisy breathing or increased effort with breathing. Symptom severity varies widely and does not follow a single predictable pattern.
What recovery usually looks like
Many people recover gradually over several days. Improvement is often uneven, with some symptoms settling while others linger. Cough and tiredness may persist longer than expected, even after fever resolves. This can be frustrating but is often part of normal recovery. Context matters when symptoms linger, particularly if they affect sleep, work, or daily functioning.
When symptoms deserve closer review
A GP review is helpful if symptoms feel severe, worsen instead of improving, or persist longer than expected. Review is also important if breathing becomes difficult, chest pain develops, or daily activities become hard to manage. Certain groups — including infants, older adults, pregnant people, and those with chronic heart, lung, or immune conditions — benefit from earlier assessment because risks differ across life stages and health backgrounds.
How your GP helps guide care
Your GP considers your symptoms alongside your medical history, vaccination status, and how the illness is evolving. Care may involve reassurance and monitoring, advice on recovery and symptom support, or further assessment when needed. Clear guidance helps reduce uncertainty and supports safer decisions during respiratory virus seasons.
Seasonal respiratory viruses are common. Understanding typical patterns helps you respond with confidence rather than alarm.
This article provides general health information only and does not replace medical advice. Please speak with your GP for personalised care.