NORWALK VIRUS. By: Channing Cox. TRANSMISSION. Humans are the only source for these viruses. These viruses do not multiply outside the human body.
PowerPoint Slideshow about ' NORWALK VIRUS' - madeline-boone
An Image/Link below is provided (as is) to download presentation
Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.
In January 2013, the US Centers for Disease Control and Prevention (CDC) reported that a new norovirus strain, GII.4 Sydney, which was first detected in Australia, had spread to the United States.
During the last 4 months of 2012, GII.4 Sydney accounted for 53% of 266 norovirus outbreaks in the United States, with roughly half of them having resulted from direct person-to-person transmission and another 20% having been foodborne.
The virus affects around 267 million people and causes over 200,000 deaths each year; these deaths are usually in less developed countries and in the very young, elderly and immuno-suppressed.