Most Australians have reached for cold and flu tablets thinking they had a mild cold, only to spend the next week completely floored. Research consistently shows that people regularly misidentify their symptoms, often underestimating what they’re dealing with until it gets worse.
Here in Botanic Ridge and across the Casey region, winter means all three are circulating at once. A runny nose, a sore throat, a bit of a cough. Is it a cold? The flu? COVID? Knowing the difference matters more than most people realise, and this guide is here to help.
Why Getting It Right Actually Matters
It might seem like splitting hairs. You feel terrible either way, right?
But identifying what you’re dealing with helps you make smarter decisions. It affects whether you need to isolate, whether you should test, whether your kids need to stay home from school, and when it’s time to stop managing it yourself and see your GP.
Getting it wrong can also mean missing something that needs proper treatment, or unknowingly passing it on to someone more vulnerable in your community.
The Common Cold: What to Look For
The common cold is caused by a range of different viruses, with rhinoviruses being the most frequent culprit. It is the mildest of the three and tends to develop gradually over a day or two.
Typical cold symptoms include:
- Runny or blocked nose
- Sore throat
- Mild cough
- Sneezing
- Mild fatigue
- Rarely a fever, and if present it tends to be low grade
Colds generally resolve on their own within 7 to 10 days. Most healthy adults can manage symptoms at home with rest, fluids, and over the counter remedies where appropriate.
Children tend to get more colds than adults simply because they haven’t yet built up immunity to the many viruses that cause them. If your child attends school or childcare in Botanic Ridge, a few colds over winter is pretty much par for the course.
Influenza: When It’s More Than Just a Cold
Influenza is a different beast. Unlike a cold that sneaks up on you, the flu tends to arrive suddenly and hits hard.
Typical flu symptoms include:
- Sudden onset of high fever, often 38 degrees Celsius or higher
- Severe muscle aches and body pain
- Significant fatigue and weakness
- Dry cough
- Headache
- Chills
- Sometimes a sore throat or runny nose, though these tend to be less prominent
The key distinction is severity and speed. If you felt fine yesterday and today you can barely get out of bed, that points more toward flu than a cold.
For most healthy adults, the flu means a miserable week or two. But for young children, older adults, pregnant women, and people with certain chronic conditions, it can lead to serious complications including pneumonia and hospitalisation.
COVID-19: Still Very Much in the Mix
COVID-19 is still circulating in Australia, including across the Casey region, and it remains important to consider it when you’re feeling unwell this winter.
The challenge with COVID is that its symptoms can overlap significantly with both a cold and the flu, which is why testing remains a useful tool.
Typical COVID-19 symptoms include:
- Fever or chills
- Cough
- Sore throat
- Runny nose
- Shortness of breath
- Fatigue
- Muscle aches
- Headache
- Loss of taste or smell, though this is less common with newer variants
- Nausea, vomiting, or diarrhoea in some cases
One important difference: COVID symptoms can vary enormously from person to person. Some people experience very mild cold-like symptoms while others are significantly unwell. Certain groups remain at higher risk of serious illness, including older adults, people with underlying health conditions, and those who are immunocompromised.
Side by Side: A Quick Comparison
| Cold | Flu | COVID-19 | |
| Onset | Gradual | Sudden | Gradual or sudden |
| Fever | Rare or mild | Common and high | Common |
| Fatigue | Mild | Severe | Mild to severe |
| Muscle aches | Mild | Severe | Mild to moderate |
| Runny nose | Very common | Sometimes | Sometimes |
| Sore throat | Common | Sometimes | Common |
| Cough | Mild | Dry and persistent | Common |
| Loss of taste or smell | Rare | Rare | Possible |
| Shortness of breath | Rare | Rare | Possible |
This table is a general guide only. Symptoms can vary from person to person and overlap between conditions. If you are unsure, testing and speaking with your GP is always the best approach.
Should You Test for COVID?
Rapid antigen tests (RATs) are widely available at pharmacies across the Botanic Ridge and Casey area. They are a useful first step when you’re unsure whether your symptoms could be COVID.
A few things to keep in mind:
- If your RAT is positive, follow current Victorian health guidelines around isolation and notifying close contacts
- PCR testing may be recommended in certain situations. Your GP can advise on this
- If you are in a high risk group and test positive for COVID, speak with your GP promptly. There are treatment options availableA negative RAT does not definitively rule out COVID, particularly if tested very early in the illness
that may be appropriate for some people, and early discussion is important.
When Should You See a GP?
This is one of the most common questions we hear at Botanic Ridge Doctors, and it’s a good one to ask.
See your GP if:
- Symptoms are severe or getting significantly worse after a few days
- You have a high fever that is not responding to medication
- You are having difficulty breathing or chest pain
- You are in a high risk group, including young children, older adults, pregnant women, or people with chronic health conditions
- Your child is unusually drowsy, not drinking fluids, or has a fever that concerns you
- You test positive for COVID and want advice on management or treatment options
- You are unsure what you have and want a proper assessment
Please don’t feel like you need to tough it out alone. That’s what we’re here for.
Managing Symptoms at Home
For mild to moderate illness in otherwise healthy adults, home management is often appropriate. Here are some general principles:
- Rest as much as possible and avoid pushing through if your body needs to recover
- Stay well hydrated with water, clear broths, and warm drinks
- Use over the counter medications such as paracetamol or ibuprofen to manage fever and discomfort, following the instructions on the packaging
- Keep the household well ventilated
- Stay home to avoid passing the illness on to others in the Botanic Ridge community
Always follow the specific advice of your GP or pharmacist when it comes to medications, particularly for children, pregnant women, or those with existing health conditions.
Protecting Yourself and Your Family This Winter
The best approach to all three is prevention where possible.
- The flu vaccine is available and recommended annually for everyone aged 6 months and over. It is free under the National Immunisation Program for eligible groups including young children, older adults, pregnant women, and those with certain medical conditions
- COVID vaccines and boosters are available and recommended, particularly for higher risk groups. Speak with your GP about what is current and appropriate for you
- Regular handwashing, good respiratory hygiene, and staying home when unwell all make a meaningful difference in a close-knit community like Botanic Ridge
Frequently Asked Questions
Can I have the flu and COVID at the same time? Yes, it is possible to be infected with more than one virus simultaneously. This is sometimes called a co-infection. If you are significantly unwell, seeing your GP for a proper assessment is the best course of action.
Do I need antibiotics for a cold or the flu? No. Colds and influenza are caused by viruses, and antibiotics only work against bacterial infections. Taking antibiotics when they are not needed can contribute to antibiotic resistance. Your GP can advise on what treatment, if any, is appropriate for your situation.
My child has a fever. Should I bring them in straight away? Not always, but it depends on their age, the height of the fever, and how they are behaving overall. As a general guide, babies under 3 months with any fever should be seen promptly. For older children, if the fever is very high, not responding to medication, or your child seems unusually unwell, it is best to call us or book an appointment.
How long am I contagious with the flu? Most adults are contagious from around one day before symptoms appear until about five to seven days after becoming sick. Children may be contagious for longer. Staying home while symptomatic is the best way to protect others.
Is there anything I can take to shorten how long I have the flu? Antiviral medications such as oseltamivir (Tamiflu) may be appropriate for some people, particularly those in high risk groups. They work best when started early in the illness. Speak with your GP as soon as possible if you think you have the flu and are in a high risk group.
How do I know when I am well enough to go back to work or send my kids back to school? A general guide is that you should be fever-free for at least 24 hours without the use of fever-reducing medication before returning to normal activities. For COVID, follow the current Victorian health guidelines. Your GP can provide specific advice for your situation.
Still Not Sure What You Have? Come and See Us.
You don’t need to diagnose yourself. That’s what your local GP is for. Whether it’s a cold that won’t quit, a flu that’s knocked you off your feet, or a positive RAT you’re not sure what to do with, the team at Botanic Ridge Doctors is here to help.
This blog post is intended for general informational purposes only and does not constitute medical advice. Please consult with a qualified healthcare professional to discuss your individual health needs and circumstances. Health guidelines around COVID-19 may change. Always refer to the Victorian Department of Health and the Australian Government Department of Health for the most current advice.
References
- Australian Department of Health and Aged Care. Influenza (flu) vaccine — who it is recommended for, how and where to get vaccinated. Available at: https://www.health.gov.au/topics/immunisation/vaccines/influenza-flu-vaccine
- Australian Technical Advisory Group on Immunisation (ATAGI). Australian Immunisation Handbook — Influenza (flu) chapter. Available at: https://immunisationhandbook.health.gov.au/contents/vaccine-preventable-diseases/influenza-flu
- Better Health Channel, Victoria. Influenza (flu) — symptoms, treatment, and prevention. Available at: https://www.betterhealth.vic.gov.au/health/conditionsandtreatments/flu-influenza
- Healthdirect Australia. Flu (Influenza) — symptoms and when to see a doctor. Available at: https://www.healthdirect.gov.au/flu
- Australian Institute of Health and Welfare (AIHW). Influenza in Australia — hospitalisations and deaths data 2025. Available at: https://www.aihw.gov.au/getmedia/5beb5b51-d4d5-476d-bc29-0b205bbce9f6/aihw-phe-236_influenza_2025.pdf
- Department of Health Victoria. Seasonal influenza vaccine — ATAGI recommendations and resources. Available at: https://www.health.vic.gov.au/immunisation/seasonal-influenza-vaccine
- Therapeutic Goods Administration (TGA). 2024 seasonal influenza vaccines registered in Australia. Available at: https://www.tga.gov.au/resources/publication/publications/2024-seasonal-influenza-vaccines