And most important, the outbreak of SARS in March made Toronto a city that travelers have been avoiding.
Norovirus is the most important cause of outbreaks of gastroenteritis, whereas only a few outbreaks of sapovirus have been reported (1, 2 ).
NV was an obvious choice: an increasing number of publications illustrate that it is one of the most important causes of outbreaks of gastroenteritis, including food- and water-related outbreaks (reviewed in 2).
Human norovirus is the most important cause of outbreaks of gastroenteritis in the United States and infects all age groups (2 ).
Human noroviruses are the most important cause of outbreaks of gastroenteritis worldwide and can be transmitted by a variety of routes, including food (1 ).
This time, many Americans are distressed by the French tilt toward the Palestinians, which many see as intended to appease France's Arab population; by France's unwillingness, apparently for commercial reasons, to support ridding Iraq of Saddam Hussein; and, most important, by the outbreak of anti-Semitic vandalism and violence in France.
These least-well regulated animals may be most important in an outbreak, precisely because they are difficult to find and their impact on disease transmission unknown.
Rocket and mix salads were selected due to their worldwide spread on the market and fresh-cut melons, since contaminated cantaloupes were involved in the most important multistate listeriosis outbreak of the last years [ 7].
The analysis showed that, for a given county, the most important factor in predicting outbreaks was that the county was classified as in outbreak status in the previous year.
The consumption of unpasteurized milk has been the most important source of campylobacteriosis outbreaks [ 17].
