Cocooning (immunization) Cocooning (immunization) Cocooning, also known as the Cocoon Strategy, is a vaccination strategy that has been recommended by the Centers for Disease Control and Prevention (CDC) in the United States since 2006. It aims to protect newborn infants from becoming infected with pertussis by administering DTaP/Tdap (tetanus, diphtheria and acellular pertussis) booster vaccine to mothers, family members and any individuals who would come into regular contact with the newborn infant. By vaccinating these individuals with a pertussis booster a pool of persons is established around the newborn who are themselves protected from getting pertussis and passing it on to the
Meleda disease Meleda disease Meleda disease (MDM) or "mal de Meleda", also called Mljet disease, keratosis palmoplantaris and transgradiens of Siemens, (also known as "acral keratoderma", "mutilating palmoplantar keratoderma of the Gamborg-Nielsen type", "palmoplantar ectodermal dysplasia type VIII", and "palmoplantar keratoderma of the Norrbotten type") is an extremely rare autosomal recessive congenital skin disorder in which dry, thick patches of skin develop on the soles of the hands and feet, a condition known as palmoplantar hyperkeratosis. MDM is most common on the Dalmatian island of Mljet (or "Meleda"), thought to be because of a founder effect. It is of autosomal recessive inheritance.