From NICU to Nursery: Why Preterm and Low-Birth-Weight Babies Need Extra Vaccine Attention

Add as a preferred source on Google

For parents of preterm and low-birth-weight babies, the journey from the Neonatal Intensive Care Unit (NICU) to the nursery is filled with fear, hope, and countless milestones. These tiny fighters are born before their bodies are fully ready to face the outside world. Their immune systems are immature, making them more vulnerable to infections. While vaccines protect all children, they are especially critical for babies born early or underweight.

We spoke to Dr Amar Bhise, Consultant - PICU (Paediatric Intensive Care Unit), Neonatology, Paediatrics, Motherhood Hospitals, Lullanagar and Kharadi, Pune, who shared insights on the same.

Why Preterm and Low-Birth-Weight Babies Are More Vulnerable

Photo Credit: Freepik

Preterm babies miss out on vital antibodies that are normally transferred from the mother during the last weeks of pregnancy. As a result, their natural defence system is weaker. "Simple infections that may cause mild illness in full-term babies can become life-threatening for preterm infants. Conditions like pneumonia, whooping cough, influenza, and meningitis can lead to longer hospital stays and serious complications," said Dr Bhise.

How Vaccination Schedules Are Planned

Photo Credit: Freepik

"Most vaccines for preterm babies are given based on chronological age, meaning the baby's actual age from birth, rather than corrected age. This approach helps provide protection as early as possible, when the risk of infection is highest," said Dr Bhise.

However, doctors may adjust the timing of certain vaccines depending on the baby's birth weight, overall health, and whether the baby is still in the NICU. For example, vaccines such as BCG and Hepatitis B may be delayed in very low-birth-weight babies until they are medically stable or reach a minimum weight.

"Some preterm babies may receive vaccinations while still in the NICU, where they can be closely monitored for any reactions. Special focus is given to protection against serious infections such as pneumococcal disease, influenza, and respiratory syncytial virus (RSV). It is important to note that RSV prevention usually involves monoclonal antibody injections, not a routine vaccine, and may be recommended for high-risk preterm infants," explained Dr Bhise.

Parental Concerns and Myths

Many parents worry that vaccines may be "too much" for a tiny baby, as there can be side effects. "Vaccines are safe, well-studied, and carefully timed to match the baby's ability to respond and remain healthy. Minor side effects like mild fever or irritability can subside in a day or two," added Dr Bhise. Therefore, parents shouldn't delay vaccination in children.

Why Timely Vaccination Matters

Dr Bhise concluded, "Born early and fragile, preterm babies fight their first battles in the NICU. Here, timely vaccines become their strongest shield as they grow. Parents are encouraged to prioritise vaccinations, stay in close touch with their child's doctor, and follow the recommended schedule without delay, because for these tiny fighters, protection at the right time can make all the difference."