Bumping this topic, because the HantaTents are now open.
Actually, YOSE has done a good job of warning visitors, controlling deer mice, and the concessionaire has replaced the double-wall tents with single-wall.
Article from the LA Times is
here.
"
Warnings about hantavirus pulmonary syndrome now are printed in the park newspaper give(n) to visitors and in reservation confirmation letters for lodgings. It's causes and preventive measures also are posted on Yosemite's website and inside tent cabins and elsewhere in the park."
"This spring, people are coming to the park just like they did before, but now they're more informed," he said. 
