Nursery Children Experience 15 Illnesses in First Year, Study Finds
New research reveals that toddlers and pre-schoolers attending nursery will encounter an average of 15 separate illnesses during their initial year of formal childcare. This substantial health burden leads to approximately 13 days away from nursery due to sickness, according to the comprehensive study published in Clinical Microbiology Reviews.
Immune System Development Through Early Exposure
The research team, comprised of academic parents who experienced their own children's frequent illnesses after nursery enrollment, discovered that this challenging period actually functions as an "immune system boot camp." While children aged one to five in childcare settings experience more infections than their home-care counterparts, this dynamic reverses when they begin formal schooling.
Children without prior nursery attendance actually fall ill more frequently during their early school years, demonstrating how early exposure in group settings builds crucial immunity that provides protection during subsequent educational phases.
Breakdown of Common Childhood Illnesses
The detailed analysis concluded that during that critical first year of formal childcare, babies and young children typically experience:
- Approximately 12 respiratory illnesses
- Two episodes of diarrhoea or vomiting
- At least one rash-related illness
Dr Lucy van Dorp, an infectious disease genomics researcher at the UCL Genetics Institute and co-author of the study, explained the research motivation: "As parents, we were all struck by how often our collective nine children became ill after starting nursery. So we came together to do the first review of how often a child starting nursery will get sick in their first year of attendance and what can be done about it."
Call for Employer Understanding and Practical Solutions
The researchers are advocating for greater employer understanding regarding the sickness absences that parents with nursery-aged children inevitably face. In their published paper, the authors wrote: "Employers need realistic expectations about the likelihood and frequency of both child and parental/caregiver sickness absence following the end of parental leave."
They further noted: "Attendance at formal childcare may tip the balance in favour of infection now rather than later," highlighting the trade-off between early exposure and later immunity benefits.
Vaccination as Critical Protection
Dr Leo Swadling, from the UCL Institute of Infection, Immunity and Transplantation, emphasized vaccination as one of the most effective protective measures available to parents. "Newborns have some protection against infection thanks to antibodies passed from the mother, but this wanes in their first year, leaving infants – especially those starting childcare – more vulnerable to infections," he explained.
"It's normal for children to get sick a lot because their immune systems have never seen these bugs before – but then nursery serves as a 'boot camp' for their immune systems, building up resilience for the years ahead. Vaccines are a key way to protect children from serious infections in childcare, so we encourage parents to keep their children up to date with all available vaccines."
Managing Infection Spread in Childcare Settings
Dr Charlotte Houldcroft, a virologist at Cambridge University and the study's corresponding author, stressed the importance of preventing infection transmission within childcare environments. "We all have experience of our children coming home from nursery with a bug that leaves them, and often us, feeling pretty poorly – even occasionally needing hospital care," she shared.
"But it's important for parents to follow guidelines to keep children home from nursery while unwell – and potentially for another day or two after recovery, depending on the type of infection. While infections during nursery are normal and common, it's important to do what we can to mitigate their spread."
The research provides valuable insights for parents navigating the challenging first year of nursery attendance while offering evidence-based recommendations for managing childhood illnesses and supporting immune development through this critical developmental period.
