Winter-Proof Your Family: The 2026 Guide to Flu Prep and Immunity in Wigram & Hornby
As the morning frost begins to settle over the Canterbury Plains and the crisp autumn air moves through the streets of Wigram, the change in season is undeniable. While autumn in Christchurch is visually stunning, it also marks a critical transition period for our physical health. It is the time of year when "cold and flu season" stops being a distant thought and starts becoming a reality in our schools, workplaces, and homes.
At 1 Health Wigram, under the clinical leadership of Dr. Bernard Teo, our mission is to move beyond reactive medicine. We don't just want to see you when you are already unwell; we want to help our community build a foundation of resilience that keeps you healthy all year round. This comprehensive 2026 guide is designed to help you and your family navigate the upcoming winter months with a proactive, evidence-based strategy.
Why March is the ‘Goldilocks Zone’ for Immunity
In the world of preventative medicine, timing is everything. In New Zealand, the influenza virus typically begins its rounds in late April, peaking during the coldest months of July and August. However, your immune system does not "reset" instantly. It takes your body approximately two weeks after a vaccination to develop the necessary antibodies to provide full protection.
This makes late March and early April the "Goldilocks Zone"—the perfect window to get prepared. By acting now, your immune system is at its peak strength just as the temperatures drop and we all begin spending more time indoors, where viruses spread most efficiently.
Important Clinical Date: Please note that the 2026 Influenza vaccine is usually only available from the 1st of April 2026. We recommend booking your appointment now for early April to ensure you are first in line for protection.
Understanding the 2026 Flu Vaccine & Eligibility
The 2026 quadrivalent vaccine has been specifically formulated to target the four most likely strains of the virus predicted to circulate in the Southern Hemisphere this year. Influenza is not "just a bad cold"; it is a serious respiratory illness that can lead to significant downtime and, in some cases, severe complications.
Who is eligible for a funded vaccine?
Many New Zealanders are eligible for a funded (free) flu vaccine, and at 1 Health, we want to ensure everyone who qualifies takes advantage of this protection. Generally, eligibility includes:
- People aged 65 years and over.
- Pregnant women (protecting both mother and baby).
- People under 65 with certain chronic conditions (such as asthma, diabetes, or heart disease).
- Children aged 4 years and under who have been hospitalised for respiratory illness.
For a full, detailed list of who qualifies this year, you can view the 2026 Pharmac eligibility criteria here. If you are unsure, our team is happy to check your records and confirm your status.

The 1 Health Difference: Integrated Winter Wellness
One of the unique advantages of being a patient at 1 Health is our integrated model of care. We don't just look at a flu shot in isolation; we look at your total health.
The Oral-Immune Connection
Most people are surprised to learn that their dental health plays a massive role in their winter immunity. Chronic inflammation in the gums (periodontal disease) puts a constant "background stress" on your immune system. If your body is busy fighting a low-grade infection in your mouth, it has fewer resources to fight off a winter virus. This is why we encourage our patients to see Dr. Jennifer Tirtawijaya for a dental check-up as part of their winter prep. By clearing oral inflammation, you are essentially "unburdening" your immune system.
Gut Health & Your Immune System
Your gut plays a big part in keeping you well, including how your immune system works. A lot of your body’s immune cells sit in and around the gut, and what you eat can influence the balance of “good bugs” (microbiome) that live there.
Over winter in Canterbury, it is very easy to slip into a diet of heavy, processed "comfort foods" that lack the fiber and nutrients your gut bacteria need to thrive. To support a healthy, varied gut microbiome as part of a balanced diet, we recommend:
- Prebiotics: Adding foods that feed helpful gut bacteria, such as onions, garlic, and leeks.
- Probiotics: Incorporating foods that contain live cultures, like yoghurt or certain fermented vegetables.
This dietary support helps maintain the integrity of your immune system from the inside out. Please note: This is general information only and is not a substitute for personalised advice from your own healthcare professional.
Wellness Innovation: NAD+ Wellness Injections at 1 Health
As part of our commitment to offering modern wellness options, 1 Health is offering NAD+ wellness injections in 2026. This is an optional service for patients who are interested in supporting their general wellbeing.
NAD+ (nicotinamide adenine dinucleotide) is a coenzyme present in every cell of your body and plays a critical role in normal energy production and cellular repair processes. Some people are curious about NAD+ because of emerging research and discussion in global wellness and aesthetics circles.
At this stage, evidence for specific health benefits of NAD+ injections in generally well people is still developing, so results can vary from person to person. At 1 Health, we prioritise transparency and education; we will talk through the potential benefits, uncertainties, risks, and alternatives with you before you decide whether this treatment is right for you.
NAD+ wellness injections at 1 Health are administered by our Registered Nurse, Jordan Zheng, with clinical oversight from Dr. Bernard Teo. This service is designed to complement, not replace, core aspects of winter health such as vaccination, good nutrition, sleep, exercise, and appropriate medical care when you are unwell.

Distinguishing Between a Cold and the Flu
For parents in Wigram and Hornby, it can be difficult to know when to keep a child home or when to call the doctor.
- The Common Cold: Usually builds up over a few days. Symptoms include a runny or stuffy nose, sore throat, and a mild cough. A fever is rare in adults with a cold.
- The Flu: Usually hits "like a brick." It comes on suddenly with a high fever, aching muscles, chills, and profound fatigue.
If you or a family member experiences difficulty breathing, chest pain, or a fever that won't come down with standard over-the-counter care, please contact us immediately. Being a 7-day clinic, we offer weekend availability to ensure you aren't left waiting when an illness takes a turn for the worse.
Myth-Busting: Winter Edition
There is a lot of misinformation that circulates during the colder months. Here is the clinical reality on some common sayings:
Myth: “Feed a cold, starve a fever.”
Fact: This is an old saying, not medical advice. When you’re sick with a cold or fever, your body is actually working overtime and requires energy. Aim to drink plenty of fluids to avoid dehydration and eat small, nourishing foods as you feel able. If you are very unwell or can’t keep fluids down, you should seek medical help.
Myth: "I can catch the flu from the vaccine."
Fact: This is biologically impossible. The flu vaccine does not contain any live virus. If you feel "under the weather" for 24 hours after a jab, it is actually a sign that your immune system is working hard to build the protection you need.
5 Steps to Winter-Proof Your Family Today
- Book the Jab: Schedule your influenza vaccination for early April.
- Check Your Vitamin D: With the lower sunlight levels in Christchurch, talk to Dr. Teo about whether your levels need support.
- Audit Your Pantry: Focus on whole foods, onions, garlic, and greens.
- Prioritize Sleep: Your immune system repairs itself while you sleep. Aim for 7-9 hours.
- Stay Active: Even a brisk walk through Wigram Skies helps maintain circulation and immune function.
Your Medical Home in Wigram
At 1 Health, we are proud to be a locally owned, patient-focused clinic serving the Wigram, Hornby, and Halswell communities. Whether you are coming in for your annual flu vaccine, a wellness assessment with Nurse Jordan, or a consultation with Dr. Bernard Teo, you can expect an environment of clinical excellence and "unhurried" care.
Winter is coming—but with the right preparation, your family can stay healthy, active, and resilient.
[BOOK YOUR FLU VACCINE FROM APRIL 1ST] [CALL 03 662 9309 TO JOIN THE CLINIC]
Mandatory Medical Note This guide is for informational purposes and does not replace professional medical advice. Flu vaccinations and NAD+ treatments require an individual clinical assessment. Please consult with our GP or Registered Nurse to discuss your specific health needs and any potential risks.
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Disclaimer:
This article is for general information only and is not medical advice. Every person’s health situation is different. For personalised guidance or diagnosis, please consult a qualified clinician.














