I'm right up the road from Vita, at UVA.
We have 2 upper levels (I think they're all third years), and usually 4-5 interns, one of whom is on night float each week. Interns are from Peds, FM, and anesthesia--not sure if EM interns do wards or not.
One upper level will generally serve as the admit resident if there are any pending admissions or transfers during rounds, but this can vary. Otherwise, they follow all the patients as a pair and make sure things get done, as well as cross-cover when the interns have clinic in the afternoon.
Interns are responsible for splitting the patients among themselves. Generally, you follow who you admit while you're on call, and the patients admitted overnight are split among the remaining interns. They put in all the notes and orders on their patients, with input from the upper level, and are responsible for writing discharge summaries. They present whichever patients are not covered by med students.
There may or may not be a fourth year med student on, who functions identically to the interns, except that the upper level signs their note, and the attending then writes his or her own note on those patients.
We generally have 4 third year med students, who are split between days and night float (each student does a week of night float, but the rotation is only 3 weeks long, so there's often more than one student on nights). The students follow 2-3 patients each, and present those patients. Generally, the med students only follow the general patients, leaving the subspecialty patients for the interns, but this can vary depending on the interns, upper levels, and interest of the student. There's actually a teach resident who works in the clinic in the morning, and comes and teaches the med students in the afternoon, so that isn't necessarily the responsibility of the interns or upper levels.
The general peds attending is actually often a subspecialist--cardiology, ID, and GI attendings all serve as general wards attending throughout the year, in addition to the general pediatricians.
All pediatric patients outside of the NICU, PICU, Heme/Onc, and Surgery service are covered by the wards team, so there are actually multiple fellow/attending teams, but only one resident team (the residents on the subspecialty teams are generally only responsible for the outpatients, not the inpatients, though it varies slightly from service to service). The subspecialty services with their own teams are GI, Endocrine, Cardiology, Renal and Pulmonary.
