Biostatistician Ira Longini from the University of Washington, Seattle, and his colleagues show that the vaccine would need to reach at least 70% of the population, starting with children first, to significantly impede spread.
Factors impeding spread included resource constraints, unclear responsibility for funding and accountability for implementation, and pre-existing ways of providing palliative care.
The social conditions that birthed a new idea in one place impeded the spread of that same idea in another.
In 1998 the company laid off 25,000 people and repatriated control to the Schaumburg headquarters.The trouble with silosThe main failing of the classic structure was that it impeded the spread of knowledge and limited the economies of scale that could be reaped.
We evaluated how weather, fuels, and topography impeded fire spread in four large study areas in the western US, three in the Northern Rockies and one in the Southwest.
An attempt was made to define some of the pressures likely to limit the spread of wild forms in nature, or that could prevent or impede the spread and increase the frequency of alleles from cultivated plants.
Those doors open outward, into stairways, and are designed to impede the spread of fire for an hour and keep smoke out of the stairways.
To impede the spread of flu, Father Raymond Borkowski, pastor of St. John Church in Cromwell, has given his parishioners the option of forgoing the peace handshake and drinking from the chalice.
For the last five years, the biotechnology company Oxitec has been developing a plan to experimentally release the GMO mosquitoes in the Keys, which scientists hope could eventually impede the spread of the Zika virus.
