The virus is pass on from the infected duck to the egg resulting in congenital infection.

This test is used to screen infants for certain congenital infections (infections transmitted from mother to fetus/newborn via the placenta).

The TORCH screen is one way to assess whether your child has a congenital infection.

In some cases, the mother may also need to be tested to help diagnose certain congenital infections.

If high levels of immunoglobulin IgM against a particular microorganism are detected in the infant, there may be congenital infection.

The three leading categories of birth defects are structural/metabolic, congenital infections, and other conditions.

CMV remains the most important cause of congenital viral infection in the United States.

Drug use during pregnancy, particularly cocaine use, has been associated with increased risk for maternal syphilis and congenital infection (136).

Some may cross the placenta and cause congenital infection of the fetus.

If antenatal screening was introduced to prevent congenital infection 87-91% of susceptible women born in Britain would require repeated serological testing throughout pregnancy.