Agnes Gereben Schaefer

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BACKGROUND Global pandemic influenza preparedness relies heavily on public health surveillance, but it is unclear that current surveillance fully meets pandemic preparedness needs. METHODS We first developed a conceptual framework to help systematically identify strategies to improve the detection of an early case or cluster of novel human influenza(More)
BACKGROUND Since 1994, Pennsylvania, like several other states, has provided a 5% discount on workers' compensation insurance premiums for firms with a certified joint labor management safety committee. This study explored the factors affecting program participation and evaluated the effect of this program on work injuries. METHODS Using Pennsylvania(More)
OBJECTIVES We tested telephone-based disease surveillance systems in local health departments to identify system characteristics associated with consistent and timely responses to urgent case reports. METHODS We identified a stratified random sample of 74 health departments and conducted a series of unannounced tests of their telephone-based surveillance(More)
Laser Altimetry, more referred in the commercial sector as LIDAR (Light Detection and Ranging) mapping, is establishing as a common operational tool in the fields of mapping, remote sensing and fotogrametry. LIDAR can to generate quickly dense and accurate digital terrain model. For applications that need digital terrain models with high density and(More)
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