Why would a baby be born with high white blood count?

A baby can be born with a high white blood count (WBC) due to several factors:

1. Infection: A common reason for elevated WBC in newborns is infection. Infections, such as bacterial or viral infections, can cause the body to produce more white blood cells to help fight off the infection.

2. Prematurity: Premature babies, born before 37 weeks of gestation, often have higher WBC counts. This is because their immune systems are not fully developed and they are more susceptible to infections.

3. Maternal factors: Certain conditions or factors during pregnancy can affect the baby's WBC count. For example, maternal infections or inflammation can lead to an elevated WBC count in the baby.

4. Genetic disorders: Some genetic conditions, such as congenital neutropenia or Kostmann syndrome, can cause a baby to be born with a low white blood cell count. In rare cases, a high white blood cell count may be associated with certain genetic syndromes or disorders.

5. Transient high WBC: In some cases, newborns may have a transient increase in WBC count shortly after birth, which usually resolves on its own within a few days.

If a newborn has a high white blood count, it is essential for healthcare professionals to determine the underlying cause. They may conduct tests, such as a complete blood count (CBC), blood cultures, or other diagnostic procedures, to identify any underlying infections or conditions. Appropriate treatment will be provided based on the specific cause of the elevated WBC count.