She becomes a barrier between the virus and her grandmother
Each winter, children move through schools and homes as unwitting carriers, linking the healthy to the vulnerable in chains of transmission that a single vaccine can interrupt. Doctors in the UAE, drawing on Harvard research spanning nearly a decade, are making the case that immunizing young children against influenza is not merely a personal health decision but a communal one — a quiet act of protection extended to grandparents, newborns, and pregnant women who cannot fully defend themselves. The evidence is consistent: vaccinated children aged two to five show up to 14 percent fewer infections, and when that reduction scales across millions of households, it amounts to a meaningful reordering of who gets sick and who does not.
- Children are biological bridges between the virus and the people least equipped to survive it — the elderly, the pregnant, the chronically ill — making childhood vaccination a matter of collective survival, not just individual health.
- Harvard researchers tracked flu seasons from 2016 to 2023 and found vaccinated two-to-five-year-olds had infection rates up to 14 percent lower than unvaccinated peers, a reduction that could spare up to one million Americans from flu each winter.
- In the UAE, free annual flu vaccines are available for all children from six months old, yet uptake remains uneven, with hesitancy persisting even as Abu Dhabi reported vaccination rates more than doubling between 2022 and 2026.
- School-based awareness campaigns and routine health check alignment are emerging as the practical levers for closing the gap between what the science recommends and what parents are choosing to do.
A child who receives a flu vaccine in December does more than protect herself — she becomes a barrier between the virus and her grandmother, between the playground and the maternity ward. This is the argument UAE doctors are advancing, supported by new research from Harvard Medical School that studied flu seasons between 2016 and 2023. The findings are striking: children aged two to five who received annual flu vaccines showed infection rates up to 14 percent lower than unvaccinated peers, a reduction consistent enough across seasons to translate into hundreds of thousands — possibly a million — fewer flu cases each winter in the United States alone.
The logic behind the numbers is simple. Children are transmission hubs, moving daily through schools, nurseries, and sports activities before returning home to parents, siblings, and elderly relatives. When they carry the flu, they distribute it. Dr. Abeer Al Khalafawi, a consultant paediatrician in Dubai, describes vaccinated children as shields for the entire household ecosystem — protecting pregnant women, infants too young for vaccination, and people with chronic illness who cannot mount their own defense. Harvard's Dr. Anupam Jena put the individual math plainly: for every 100 children vaccinated, between nine and fourteen avoided an infection they would otherwise have caught.
In the UAE, annual flu vaccination has long been recommended for all children from six months old and is offered free by the Ministry of Health. Global data from recent flu seasons shows vaccination reduced confirmed influenza in children by up to 60 percent, with severe hospitalizations dropping by more than half. Abu Dhabi reported that overall vaccination uptake more than doubled between the 2022–23 and 2025–26 seasons — a meaningful shift, though doctors caution the gains remain fragile.
Hesitancy persists. Dr. Praveen Sreekanthalal of NMC Specialty Hospital in Abu Dhabi notes that awareness campaigns in schools and clinics are essential to sustaining momentum. The vaccine is not perfect, but its effect is real: fewer missed school days, fewer hospital visits, and children transformed — through a single annual injection — into quiet protectors of the people around them.
A child who gets a flu shot in December does more than protect herself. She becomes a barrier between the virus and her grandmother. Between the playground and the maternity ward. Between winter and the vulnerable people in her life who cannot fight off infection on their own.
This is the argument doctors in the UAE are making as they push for wider childhood flu vaccination, and they have new evidence to back it up. Researchers at Harvard Medical School studied flu seasons from 2016 to 2023 and found something striking: children aged two to five who received annual flu vaccines showed infection rates up to 14 percent lower than unvaccinated peers. The protection was measurable, consistent, and it rippled outward. When scaled across a population the size of the United States, that reduction translates to somewhere between hundreds of thousands and a million fewer flu cases each winter in young children alone.
The mechanism is straightforward but powerful. Children are transmission hubs. They spend their days in close quarters—schools, nurseries, playgrounds, sports activities—moving between environments where viruses spread easily. When they catch the flu, they bring it home. They hand it to their parents, their siblings, their elderly relatives. Dr. Abeer Al Khalafawi, a consultant paediatrician at Medcare Women and Children Hospital in Dubai, frames it plainly: vaccinating children protects not just the child but the entire household ecosystem. Pregnant women, infants too young for vaccination, people with chronic illnesses, the elderly—all benefit when the children around them are immunized.
The Harvard data is granular enough to be convincing. Researchers compared children born in autumn with those born in summer, tracking them across multiple flu seasons. Autumn-born children were more likely to be vaccinated early because their birthdays aligned with routine health checks. The result: consistently lower influenza rates in that group. Dr. Anupam Jena from Harvard's Blavatnik Institute put the math plainly: for every 100 children randomly vaccinated because of when they were born, between nine and 14 of them avoided a flu infection they would otherwise have caught. That is not a marginal effect.
In the UAE, health authorities have long recommended annual flu vaccination for all children aged six months and older, offered free by the Ministry of Health and Prevention. Children under nine receiving the vaccine for the first time need two doses, spaced at least four weeks apart; subsequent years require only one. The broader research supports this approach. Over the past three flu seasons, global studies show flu vaccination reduced laboratory-confirmed influenza in children by up to 60 percent. Severe hospitalizations dropped by more than half, depending on which strains were circulating.
Yet uptake remains uneven. In Abu Dhabi, Dr. Praveen Sreekanthalal, a consultant in paediatrics at NMC Specialty Hospital, notes that vaccine hesitancy persists even as more parents appear willing to vaccinate their children. The Abu Dhabi Public Health Centre reported that overall vaccination uptake more than doubled between the 2022-23 season and 2025-26, a significant shift. But the gains are fragile. Sreekanthalal points to awareness campaigns in schools and healthcare facilities as essential to sustaining momentum and moving past lingering doubts.
The vaccine itself is not perfect. It cannot prevent every case. But the numbers it does prevent are substantial. When children are vaccinated, they miss fewer school days, make fewer visits to doctors, require fewer hospital admissions. And they become, in effect, a shield for the people around them who are too young, too old, or too medically fragile to mount their own defense. That is the full calculus: individual protection plus collective protection, the child's health and the grandmother's, the infant's and the pregnant woman's, all connected through a single annual injection.
Notable Quotes
Children are often at the centre of flu transmission because they spend significant time in close-contact environments such as schools, nurseries, sports activities, and playgrounds.— Dr. Abeer Al Khalafawi, consultant paediatrician, Medcare Women and Children Hospital, Dubai
For every 100 kids who are randomly vaccinated because of when their birthday falls, somewhere between nine and 14 of them avoid a case of the flu that they otherwise would have caught.— Dr. Anupam Jena, Harvard Medical School's Blavatnik Institute
The Hearth Conversation Another angle on the story
Why does a child's flu shot matter more than just keeping that child healthy?
Because children are the main way the flu spreads through a community. They're in schools, playgrounds, close quarters all day. When they get sick, they bring it home to people who can't fight it off—newborns, pregnant women, elderly relatives, people with chronic illnesses.
So it's about herd protection—the idea that vaccinating enough people stops the virus from circulating at all?
Partly, yes. But it's more intimate than that. It's about protecting the specific vulnerable people in a child's own household and social circle. The grandmother. The pregnant aunt. The baby brother.
The Harvard study found a 14 percent reduction in infection rates. That sounds modest. Why is that significant?
Because when you scale it across millions of children, 14 percent becomes hundreds of thousands or a million prevented cases per winter. And those aren't just mild sniffles—we're talking about serious hospitalizations cut in half, school days saved, families spared from crisis.
The article mentions vaccine hesitancy is still a challenge. What's driving that doubt?
The article doesn't say exactly, but it suggests awareness is part of it. People need to understand not just that the vaccine works, but why it matters beyond their own child. That's a harder sell than individual protection.
What changed between 2022-23 and 2025-26 in Abu Dhabi?
Vaccination uptake more than doubled. That's a real shift in behavior. But the doctors are careful to say it's still not universal, and that hesitancy remains a barrier to going further.
If the vaccine is so effective, why isn't it standard everywhere?
It is recommended widely—the American Academy of Pediatrics, the UK's NHS. But recommendation and uptake are different things. Getting parents to act on that recommendation, especially when they're skeptical about vaccines generally, is the ongoing challenge.