The everyday power of immunization

Most days begin with managing the morning rush: packing lunches, searching for a missing shoe, or getting kids to school. Some grab coffee on the way to work. Others stop at the store to prepare for dinner or check on an elderly parent. These routines feel stable – until someone gets sick.

Illness arrives without warning. Suddenly, there’s a fever, sore throat or upset stomach that wasn’t there yesterday. Appetite disappears, sleep is restless and energy is low. Routines fall apart. Work and school are missed and plans are delayed. Life gets even harder.

This is what illness really looks like. It’s not just numbers or news stories – it’s the disruption that affects your family and your week. We focus on getting through, hoping for better sleep and helping loved ones recover. Most people don’t think about immunizations during these times, but this is when immunizations quietly help by stopping illness from worsening and keeping routines steady. Kids can go to school, adults can work and plans can continue.

In my work in public health, I see how illness spreads through communities, homes, classrooms and workplaces. One infection can quickly lead to a chain of problems for many people. Immunizations help stop this chain by lowering the risk of getting and spreading illness and preventing outbreaks. As a family doctor, I see firsthand how these disruptions affect people and their families.

For some, immunizations are even more important. Babies too young for immunizations, cancer patients in treatment and those with weak immune systems all benefit when others are immunized. Community protection lowers their risk of serious illness and gives them a layer of defence they can’t get on their own.

Like any medical decision, immunization isn’t perfect or risk-free. Side effects are rare, but they are real and matter. Soreness at the injection site, a mild fever or feeling off for a day or two are most common. These are signals your body is responding and building protection. Serious side effects are even rarer. The science shows that the benefits for you, your family and your community are much greater than the risks. Side effects are a reasonable thing to think about, but when you step back, the concern that matters most to most people is much more immediate: how do I stop illness from disrupting everything?

It’s important to understand how immunizations protect communities over time. Diseases like measles used to be a regular part of life. Outbreaks were common and families had to manage serious illness at home. Over decades of widespread immunization, those disruptions faded away. Most people today, including many healthcare professionals, have never seen a case of measles. That’s not because the disease disappeared, but because enough people were immunized to stop it from spreading.

When fewer people get immunized, community protection weakens. The disease doesn’t make a big return all at once – it starts quietly, with a case here or there. Suddenly, more kids miss school, activities are cancelled and vulnerable people are at risk. The disruptions that immunizations had prevented are starting to come back.

That’s why immunization is a community decision as much as a personal one. When enough people are immunized, diseases can’t spread easily. Outbreaks stay small and life keeps moving. When immunization rates drop, everyone feels the effects – not just the unimmunized, but also babies, elderly relatives and others who couldn’t get immunized.

Getting immunized is one of the most meaningful choices you can make to keep daily life going. Immunizations help prevent illness, lower the risk of spreading disease, help keep you out of emergency rooms and keep our communities healthy. It’s not just for you, but for those around you.

If you have questions or concerns about immunizations, start by talking openly with your doctor or healthcare provider. There are no wrong questions, so reach out and ask. Whether you want to know about side effects, timing, or what’s best for your family, a trusted healthcare professional can help you work through your concerns and make an informed choice.

April 26–May 2 is National Immunization Awareness Week, which is a great time to check your immunization records and book an appointment to get caught up. You can find information about free, routine immunizations in Nova Scotia at nshealth.ca/immunizations.

Photo of Dr. Ryan Sommers. Dr. Sommers is the Senior Regional Medical Officer of Health and Senior Medical Director, Population and Public Health for Nova Scotia Health. He is also a family doctor, husband and father who lives and works in Colchester County.