Featured Research

from universities, journals, and other organizations

How flu virus spreads to college community: Major implications for control

Date:
July 18, 2011
Source:
American Society for Microbiology
Summary:
Many different strains of the H1N1 influenza virus were represented among 57 students at the University of California, San Diego (UCSD) who were infected during the epidemic in the fall of 2009, according to a new study. The findings have major implications in the controversy over how best to reduce the virus' spread.

Many different strains of the H1N1 influenza virus were represented among 57 students at the University of California, San Diego (UCSD) who were infected during the epidemic in the fall of 2009, according to a paper in the July Journal of Virology. The findings have major implications in the controversy over how best to reduce the virus' spread.

The investigators had planned the study in the spring of 2009, after a new strain of H1N1 was identified in San Diego, and spread rapidly around the world, says coauthor Robert T. Schooley of UCSD. "We reasoned that the epidemic would resume in the fall and that the college-age population would be particularly at risk since people under age 50 had lower levels of immunity to the new strain."

The investigators theorized that if they found a single strain, or a very limited number of strains, that would indicate that spread between the campus and the general community might be reduced by quarantines, says Schooley. "But if multiple strains of virus were circulating, that would suggest multiple introductions of the virus into the college community, that would be unlikely to be interdicted by efforts at quarantine." So they set up a prospective study to collect viral isolates from students presenting with influenza-like symptoms "when the epidemic returned in the fall," says Schooley.

The investigators identified at least 21, and possibly as many as 33, different viral strains from among the 57 students. Those results suggested that the virus had been introduced repeatedly into the college population within a very short period of time, suggesting that "quarantine efforts in the college population would have a minimal effect on limiting spread of the newly emerging strain," says Schooley. More generally, he says that quarantine, class cancellation, distribution of respiratory isolation equipment, and other isolation measures "within susceptible socially active populations such as those found on college campuses is unlikely to be effective, and that other approaches such as vaccination, focused use of antiviral drugs among those with underlying illnesses predisposing to more severe illness should be emphasized instead."


Story Source:

The above story is based on materials provided by American Society for Microbiology. Note: Materials may be edited for content and length.


Journal Reference:

  1. E. C. Holmes, E. Ghedin, R. A. Halpin, T. B. Stockwell, X.-Q. Zhang, R. Fleming, R. Davey, C. A. Benson, S. Mehta, R. Taplitz, Y.-T. Liu, K. C. Brouwer, D. E. Wentworth, X. Lin, R. T. Schooley. Extensive Geographical Mixing of 2009 Human H1N1 Influenza A Virus in a Single University Community. Journal of Virology, 2011; 85 (14): 6923 DOI: 10.1128/JVI.00438-11

Cite This Page:

American Society for Microbiology. "How flu virus spreads to college community: Major implications for control." ScienceDaily. ScienceDaily, 18 July 2011. <www.sciencedaily.com/releases/2011/07/110718154730.htm>.
American Society for Microbiology. (2011, July 18). How flu virus spreads to college community: Major implications for control. ScienceDaily. Retrieved July 29, 2014 from www.sciencedaily.com/releases/2011/07/110718154730.htm
American Society for Microbiology. "How flu virus spreads to college community: Major implications for control." ScienceDaily. www.sciencedaily.com/releases/2011/07/110718154730.htm (accessed July 29, 2014).

Share This




More Health & Medicine News

Tuesday, July 29, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Generics Eat Into Pfizer's Sales

Generics Eat Into Pfizer's Sales

Reuters - Business Video Online (July 29, 2014) Pfizer, the world's largest drug maker, cut full-year revenue forecasts because generics could cut into sales of its anti-arthritis drug, Celebrex. Fred Katayama reports. Video provided by Reuters
Powered by NewsLook.com
Nigeria Ups Ebola Stakes on 1st Death

Nigeria Ups Ebola Stakes on 1st Death

Reuters - Business Video Online (July 29, 2014) Nigerian authorities have shut and quarantined a Lagos hospital where a Liberian man died of the Ebola virus, the first recorded case of the highly-infectious disease in Africa's most populous economy. David Pollard reports Video provided by Reuters
Powered by NewsLook.com
Running 5 Minutes A Day Might Add Years To Your Life

Running 5 Minutes A Day Might Add Years To Your Life

Newsy (July 29, 2014) According to a new study, just five minutes of running or jogging a day could add years to your life. Video provided by Newsy
Powered by NewsLook.com
Ebola Outbreak Poses Little Threat To U.S.: CDC

Ebola Outbreak Poses Little Threat To U.S.: CDC

Newsy (July 29, 2014) The Ebola outbreak in West Africa poses little threat to Americans, according to officials with the Centers for Disease Control and Prevention. Video provided by Newsy
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:
from the past week

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