Under standard precautions, the nurse should wear the following when cleaning a newly admitted infant with gastroenteritis after a vomiting episode: a single pair of disposable gloves, long-sleeved disposable gowns, mask, and protective eyewear in order to prevent the splatter of the infant's vomit to the eyes, mouth, and nose. Gastroenteritis is caused by a virus that gets transmitted from one person to another either by direct contact or airborne. Touching contaminated or exposed objects, hand-shaking, and sniffing are some of the modes of transmission.