Millie Campbell was just eight years old in 2019 when a missed flu shot turned into a life-threatening ordeal, notes ABC News, Australia. What began with aches in her legs soon escalated into multiple organ failure caused by influenza B, a virus her parents never imagined could be so severe.“They had to drain 200 millilitres of fluid from her heart, it was struggling,” her mother Stephanie Campbell recalled. “I think the doctor's words were: ‘Your daughter could die tonight’.”Millie was airlifted from Newcastle to Westmead Children’s Hospital in Sydney, reports ABC News. Soon after arriving, she went into cardiac arrest. Her father, Ian Campbell, described the scene as surreal. “There was no indication she was going to survive,” he said.A Long Road to RecoveryMillie, previously fit and healthy with no pre-existing conditions, spent weeks in intensive care and six months in hospital. The damage from being on life support for so long led to poor circulation, and eventually, doctors had to amputate her left foot.She had to learn to walk again. Today, reports ABC News, Millie uses a prosthetic leg and has turned to swimming not just for rehabilitation, but as a passion, one that has taken her to national championships and World Trials. Her eyes are now set on the 2028 Paralympics in Los Angeles.“Millie’s recovery will be a lifelong journey,” Ms Campbell said. “Seeing how severe the flu can be, our message is: talk to your medical practitioner about the vaccine.”Why Influenza B Is Hitting Children HardAlthough influenza A typically gets more public attention due to its pandemic potential, Australia has seen a sharp rise in influenza B cases, especially in children aged 5 to 16. According to Professor Patrick Reading from the World Health Organization (WHO) Collaborating Centre for Influenza Research, type B can often be more severe in children, though the reason remains unclear.“It's a bit of a mystery,” Professor Reading told ABC News. “We see this association, but we can't say there's something specific about the virus that causes it to affect children more.”Vaccination rates among this age group are currently the lowest of all, following a steady decline since the COVID-19 pandemic. Professor Reading warned that fading immunity, combined with lower vaccine uptake, is placing a burden on the healthcare system.“We're not through the worst of it yet. Flu circulation continues through August to October,” he added. “It’s not too late to get vaccinated.”Confusion Around Flu Vaccine AccessMillie’s parents said they’d always kept up with her vaccinations. But once she turned five, they mistakenly believed the flu wasn’t a major risk anymore. Under the National Immunisation Program (NIP), the flu vaccine is free only for children aged six months to five years, people over 65, and other vulnerable groups.In contrast, states like Queensland and Western Australia are temporarily offering free vaccines to all residents, a move public health experts say should be adopted nationally.Julie Leask, a vaccination policy expert from the University of Sydney, told ABC News, the current risk-based model isn't working. “When a vaccine is on the NIP, it sends a strong message that it's important,” she said. “Some doctors still wrongly advise against it for kids.”Misinformation and Vaccine HesitancyFalling childhood vaccination rates, rising anti-vaccine sentiment, and misinformation, especially on social media, have complicated public health efforts.Professor Leask pointed to anti-vaccine rhetoric, such as that from US politician Robert F. Kennedy Jr., as a growing influence in Australia. Kennedy has falsely linked vaccines to autism and recently pushed against COVID-19 vaccinations for children and pregnant women.“We’re seeing the mainstreaming of misinformation,” Leask warned. “It’s having a ripple effect here too.”Research shows common reasons parents skip the flu shot for kids include a lack of awareness, absence of a healthcare provider recommendation, time constraints, cost, and safety concerns.A Family’s Call to ActionAs Millie thrives in her new life, her parents remain vocal about the importance of vaccination.“This growing hesitancy is driven by people struggling to tell the difference between facts and misinformation,” Mr Campbell said. “Most people spend more time on social media than listening to experts, but that’s not where you should be getting your health advice.”“Vaccination protects not just your child but the whole community.”