Deficiency in vitamin D may predispose people to infection
In April 2005, a virulent strain of influenza hit a maximum-security forensic psychiatric hospital for men that's midway between San Francisco and Los Angeles. John J. Cannell, a psychiatrist there, observed with increasing curiosity as one infected ward after another was quarantined to limit the outbreak. Although 10 percent of the facility's 1,200 patients ultimately developed the flu's fever and debilitating muscle aches, none did in the ward that he supervised.
"First, the ward below mine was quarantined, then the wards on my right, left, and across the hall," Cannell recalls. However, although the 3