Compared to rural areas, peri-urban areas appeared to have a higher density of equine premises (4.66 premises km−2 versus 0.80 premises km−2), longer epidemics (95 days versus 87 days), more infected premises (393 versus 339) and a shorter spread distance (1.27 km versus 2.38 km).
The effect of flock size upon duration was significant at the 10% level (winsorized data for singleton flocks, P = 0.08), such that larger flocks might experience longer epidemics.
Flock type was significantly associated with outbreak duration (winsorized data for singleton flocks; P<0.001), with purebred flocks more likely to experience longer epidemics than either commercial (hazard ratio, HR = 0.54) or mixed purebred and commercial flocks (HR = 0.59).
Under such conditions, the non-proportional model always administers a larger total number of vaccines, which results in smaller and later, but sometimes longer, epidemics than in the proportional model.
Plague is no longer an epidemic disease of port cities.
By the time the crew of the Albedo escaped, Somali piracy was no longer an epidemic.
Health experts and officials warn that the longer the epidemic is left unchecked, the greater the risk of it spreading to other countries in a region where families extend across porous borders.
However, despite these concerns, we believe that with concerted efforts and sustained commitments, we can make substantial advances toward the hope of a world in which AIDS is no longer an epidemic threat.
The biennial cycle of large, early, and short seasonal epidemics followed by smaller, later, and longer seasonal epidemics the next year observed in Utah is similar to other published studies of seasonal RSV epidemics in temperate climates.
