Objective To obtain information on varicella pre-matriculation requirements in US colleges for undergraduate students during the 2014–2015 academic year. Participants Healthcare professionals and member-schools of the American College Health Association (ACHA). Methods An electronic survey was sent to ACHA members regarding school characteristics and whether schools had policies in place requiring that students show proof of 2-doses of varicella vaccination for school attendance. Results Only 27% (101/370) of schools had a varicella pre-matriculation requirement for undergraduate students. Only 68% of schools always enforced this requirement. Private schools, 4-year schools, Northeastern schools, those with <5,000 students, and schools located in a state with a 2-dose varicella vaccine mandate were significantly more likely to have a varicella pre-matriculation requirement. Conclusions A small proportion of US colleges have a varicella pre-matriculation requirement for varicella immunity. College vaccination requirements are an important tool for controlling varicella in these settings.

A segmented container called the V-box was designed to train adult subjects who fail a Piagetian type measure of the horizontality concept. The first segment appears round when viewed from straight an and virtually all adults were able to predict correctly howthe water line would appear when this segment was half filled with water. Partitions can be removed and the water allowed to fill up the entire container which has straight-line boundaries. On a pretest, 28 of 43 subjects failedto indicate the water line correctly on the container, when its straight-line characteristics were apparent. Of these 28, 18 were able to do so after being exposed gradually to the container's rounded segment and, step by step, to its elongated segments with straight-line boundaries. The difference in pre- to posttest change in performance between these 18 subjects and the 10 control subjects was significant.

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