Pertussis vaccine wholesale in the developing world at a cost of 15.41 USD per dose as of 2014. Acellular pertussis vaccine (aP) with three or more antigens prevents around 85% of typical whooping cough cases in children. It has higher or similar efficacy to the previously-used whole cell pertussis vaccine, however the efficacy of the acellular vaccine declines faster. Acellular vaccines also cause fewer side effects than whole cell vaccines. Despite widespread vaccination, pertussis has persisted in vaccinated populations and is one of the most common vaccine-preventable diseases. The recent resurgence in pertussis infections is attributed to a combination of waning immunity
Ménétrier's disease Ménétrier's disease Ménétrier disease (also known as hypoproteinemic hypertrophic gastropathy; named after a French physician Pierre Eugène Ménétrier, 1859–1935), is a rare, acquired, premalignant disease of the stomach characterized by massive gastric folds, excessive mucous production with resultant protein loss, and little or no acid production. The disorder is associated with excessive secretion of transforming growth factor alpha (TGF-α). Individuals with the disease present with upper abdominal pain (epigastric), at times accompanied by nausea, vomiting, loss of appetite, edema, weakness, and weight loss. A small amount of gastrointestinal bleeding may occur, which is typically due to superficial mucosal erosions; large