Featured Research

from universities, journals, and other organizations

Particularly dangerous Salmonella discovered

Date:
April 18, 2012
Source:
University of California - Santa Barbara
Summary:
Researchers have discovered Salmonella bacteria that are up to 100 times more capable of causing disease. Their findings may help prevent food poisoning outbreaks that continue to plague public health and the food industry.

Salmonella typhimurium (red) invades cultured human cells in this color-enhanced scanning electron micrograph.
Credit: Rocky Mountain Laboratories, NIAID, NIH

UC Santa Barbara researchers have discovered Salmonella bacteria that are up to 100 times more capable of causing disease. Their findings may help prevent food poisoning outbreaks that continue to plague public health and the food industry.

Related Articles


These "hypervirulent" bugs can override vaccines and pose a risk to food safety -- and mitigation efforts are currently under way.

Previous strategies to find the more dangerous bugs were unsuccessful since they behave like a "Trojan Horse" -- exposing their weapons only when causing disease -- but looking much like their less-virulent cousins in the environment.

Now that scientists know what to look for, they are developing methods to discriminate them from their less-virulent cousins. The researchers have been successful in forcing the bacteria to reveal their weapons in the laboratory -- the first step in combating them.

Salmonella, found virtually everywhere, is the most common cause of foodborne illness in the United States. According to the researchers, the emergence of more powerful strains could eventually overtax the current public health system, which regularly deals with outbreaks from tainted food. Currently, the system is coping with an outbreak that has sickened more than 100 people in 20 states.

Humans usually get Salmonella food poisoning from eating contaminated beef, chicken, eggs, fruits, or vegetables. The threat is exacerbated when these foods are not cooked. And Salmonella control efforts are expensive: Recent estimates place this cost at up to $14.6 billion annually in the U.S.

"Now that we have identified the problem -- and potential solutions -- we just need to get to work," said Douglas Heithoff, lead author of the paper.

This study was launched with support from The G. Harold & Leila Y. Mathers Foundation, which then leveraged additional funding from the U.S. Department of Agriculture, National Institutes of Health, U.S. Army, and Santa Barbara Cottage Hospital Research Program.


Story Source:

The above story is based on materials provided by University of California - Santa Barbara. Note: Materials may be edited for content and length.


Journal Reference:

  1. Douglas M. Heithoff, William R. Shimp, John K. House, Yi Xie, Bart C. Weimer, Robert L. Sinsheimer, Michael J. Mahan. Intraspecies Variation in the Emergence of Hyperinfectious Bacterial Strains in Nature. PLoS Pathogens, 2012; 8 (4): e1002647 DOI: 10.1371/journal.ppat.1002647

Cite This Page:

University of California - Santa Barbara. "Particularly dangerous Salmonella discovered." ScienceDaily. ScienceDaily, 18 April 2012. <www.sciencedaily.com/releases/2012/04/120418135142.htm>.
University of California - Santa Barbara. (2012, April 18). Particularly dangerous Salmonella discovered. ScienceDaily. Retrieved November 26, 2014 from www.sciencedaily.com/releases/2012/04/120418135142.htm
University of California - Santa Barbara. "Particularly dangerous Salmonella discovered." ScienceDaily. www.sciencedaily.com/releases/2012/04/120418135142.htm (accessed November 26, 2014).

Share This


More From ScienceDaily



More Health & Medicine News

Wednesday, November 26, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Pet Dogs to Be Used in Anti-Ageing Trial

Pet Dogs to Be Used in Anti-Ageing Trial

Reuters - Innovations Video Online (Nov. 26, 2014) Researchers in the United States are preparing to discover whether a drug commonly used in human organ transplants can extend the lifespan and health quality of pet dogs. Video provided by Reuters
Powered by NewsLook.com
From Popcorn To Vending Snacks: FDA Ups Calorie Count Rules

From Popcorn To Vending Snacks: FDA Ups Calorie Count Rules

Newsy (Nov. 25, 2014) The US FDA is announcing new calorie rules on Tuesday that will require everywhere from theaters to vending machines to include calorie counts. Video provided by Newsy
Powered by NewsLook.com
Daily Serving Of Yogurt Could Reduce Risk Of Type 2 Diabetes

Daily Serving Of Yogurt Could Reduce Risk Of Type 2 Diabetes

Newsy (Nov. 25, 2014) Need another reason to eat yogurt every day? Researchers now say it could reduce a person's risk of developing type 2 diabetes. Video provided by Newsy
Powered by NewsLook.com
Madagascar Working to Contain Plague Outbreak

Madagascar Working to Contain Plague Outbreak

AFP (Nov. 24, 2014) Madagascar said Monday it is trying to contain an outbreak of plague -- similar to the Black Death that swept Medieval Europe -- that has killed 40 people and is spreading to the capital Antananarivo. Duration: 00:42 Video provided by AFP
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:

Strange & Offbeat Stories


Health & Medicine

Mind & Brain

Living & Well

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins