WFFS stands for Warmblood Fragile Foal Syndrome - it is a recessive disorder Genetic Testing is Available
WFFS causes thin, fragile skin. Affected foals may be born with skin lesions and an open abdomen and are typically euthanized at birth or within a few days of birth. It is similar to HERDA except is shows up at birth.
There is no effective treatment.
Warmblood Fragile Foal Syndrome is reported only in Warmbloods.
There are a few different Labs that test for it - enquire at your favorite lab.