Vaccines – an achievement of modern medicine that has saved millions of lives. Yet, the rise of online misinformation has caused a surge in vaccine hesitancy and fears, which has left many adults and children unvaccinated from dangerous diseases. This, in turn, has led to a resurgence of preventable diseases, such as the 2025 measles outbreak in the United States.
To safeguard our health and those of our children, we must separate fact from fear regarding vaccinations. Let’s look at how vaccines work, and disprove common myths and misconceptions regarding them.
How Do Vaccines Work?
The human immune system is hardwired to fight against harmful invaders such as bacteria, viruses, and parasites. Your white blood cells produce proteins called antibodies that learn to recognise and prevent you from falling sick (or ensuring you don’t stay sick for long).
However, what if your body’s natural defences aren’t strong enough? That’s where vaccines come in. Vaccines contain active ingredients called antigens that trigger your immune response. Examples of antigens include:
- Weakened or dead bacteria or viruses
- Bits of their genetic material or exterior surface
- Treated bacterial toxins
Vaccines imitate an infection, engaging the immune system to produce antibodies without causing illness. Through vaccination, the body can better handle an actual infection, as it already has the antibodies necessary to combat it.
Common Vaccination Myths
Vaccines have been around for decades, yet there are still plenty of myths that cause confusion. Let’s clear up some of the most common ones and explain what the science really says.
Myth #1: Vaccines overload the immune system
A common misconception is that a child’s immune system can be compromised or overloaded if exposed to multiple vaccines simultaneously. In reality, children are exposed to an array of antigens daily from just playing in a park than what they receive from vaccines.
Studies have proven no difference between a child receiving the recommended vaccines in combination versus when administered separately. Delaying vaccines only increases a child’s risk of contracting preventable diseases.
Myth #2: Vaccines cause autism and sudden infant death syndrome (SIDS)
Side effects from vaccines are generally mild and brief — a sore arm and flu symptoms such as a fever. More often, health complications from vaccine-preventable diseases are higher than from a vaccine.
Multiple studies have proven that vaccines do not inherently cause autism; the commonly referenced 1998 study by Andrew Wakefield linking autism to the MMR vaccine has been thoroughly discredited and withdrawn.
As for Sudden Infant Death Syndrome, it should be stated that there is no evidence that vaccinating your baby causes SIDS, with studies showing that vaccination and SIDS fall into a correlative relationship rather than a causational one.
Myth #3: Vaccines are not necessary if everyone else is immune
A community with a high vaccination rate towards a contagious disease develops herd immunity. This is important for those who are vulnerable and cannot be vaccinated, such as infants, pregnant women and people with weaker immune systems.
According to the Department of Health and Aged Care, herd immunity is achieved with at least 95% of a community vaccinated. As such, relying solely on herd immunity can actually weaken it, as doing so reduces the number of immune individuals and can potentially revive preventable diseases.
Myth #4: Vaccinations guarantee you won’t get infected
Vaccination dramatically reduces your chances of infection, but it doesn’t offer absolute protection. Building immunity takes time – typically several weeks after receiving a vaccine. Additionally, some vaccines, like the flu vaccine, require periodic updates due to frequent virus mutations.
However, even if you do become infected after vaccination, your symptoms will likely be milder, and the risk of serious complications will be significantly lower compared to someone who remains unvaccinated.
Myth #5: Vaccination is unnecessary for ‘eradicated’ diseases
While diseases such as polio are less common due to successful vaccination programs, they haven’t disappeared entirely. Polio and other serious illnesses are still widespread in certain parts of the world and can unexpectedly return if vaccination rates continue to decline. It is therefore vital to receive the recommended vaccines according to their proper scheduling to maintain public health and to prevent these diseases from returning.
Myth #6: Natural immunity is better than vaccine-acquired immunity
Although it’s true that recovering from an illness can sometimes provide long-lasting immunity, the cost of gaining that protection can be dangerously high. Natural infection often exposes you to severe symptoms, long-term health complications, or even death. Vaccines, on the other hand, stimulate your immune system to recognise and fight off these threats without putting you through the illness itself.
Get Your Vaccines at Coolaroo Clinic
Protect yourself and your loved ones by getting vaccinated at Coolaroo Clinic. We provide flu shots and bulk vaccinations for diseases such as Tetanus, Hepatitis A & B and much more. We also offer corporate vaccination services – perfect for businesses looking for an effective way to protect their employees’ health in the upcoming flu season. Contact our team today to book your vaccine appointment!