. a senior northern ireland civil servant has apologised after hundreds of neurology patients were recalled for further testing..lea ament, left, and tamara nunley talk about the care their team provided for helen and robert valenzuela at st. jude medical center in fullerton. (scott smeltzer / staff photographer). and prevention says hepatitis a is a vaccine-preventable, communicable disease of the liver caused by a virus. it is usually transmitted person-to-person or by consuming