Navigation Links
Study Finds Military Prone to Infection With H1N1 Flu
Date:4/13/2010

Living in close quarters and young age increased risk, Singapore researchers say

TUESDAY, April 13 (HealthDay News) -- Researchers in Singapore report that those serving in the military and young adults showed higher rates of infection with the H1N1 flu during the epidemic last year.

Almost 30 percent of military personnel, who tend to be younger, appear to have been infected, versus 13.5 percent in the general population, 6.5 percent of hospital employees and 1.2 percent of those in long-term care facilities, the researchers found.

Interestingly, only 13 percent of the overall study sample was infected, leaving the remaining 87 percent still vulnerable to the virus, the study authors noted.

"In this group of individuals, only 13 percent got infected," said Dr. Kenneth Bromberg, chairman of pediatrics at The Brooklyn Hospital Center in New York City. "We can't say why, but this population will need to be vaccinated [this year] because they're not really immune to H1N1."

"The fact that large numbers remain susceptible means that it's still worthwhile to vaccinate adults after the initial wave," added Mark I.C. Chen, lead author of the report appearing in the April 14 issue of the Journal of the American Medical Association.

The H1N1 virus first appeared last April in the Northern Hemisphere. It was detected in Singapore, a tiny nation-state on the equator, in May of 2009 and became epidemic there from late June 2009 through early August 2009.

In their study, Chen and colleagues measured changes in antibody levels in blood samples from four groups of people: the general population, military personnel, staff at an acute-care hospital, and staff and residents of long-term care facilities between June 22, 2009 and Oct. 15, 2009.

High rates of infection in the military could be due to crowded living conditions, as well as gender (males tend to be more susceptible to respiratory and stomach viruses) and younger age, said Dr. Dean Blumberg, an associate professor of pediatric infectious diseases at University of California, Davis, Children's Hospital.

People in households where other people had been infected with H1N1 had triple the risk of infection compared with the general population. On the other hand, older people were less likely to be infected, as were people who had existing antibodies.

Why would some people have existing antibodies to an entirely new viral strain? Several reasons, said Chen, who is an associate consultant at Singapore's Tan Tock Seng Hospital. "Some individuals vaccinated [with the seasonal influenza vaccine] developed antibodies to H1N1-2009," he said. "Another is the imperfect specificity of the test for influenza antibodies."

Individuals may also have been infected with older strains of influenza (notably one circulating in 1957-1958), which could have conferred protection against H1N1.

Hospital workers may have been protected through various infection-control measures, such as wearing masks, and patient and visitor screening before entering facilities, the authors stated.

The study did not include information on the spread of the virus in children, which could represent a major drawback.

"We believe that the key players in the outbreak were children," Bromberg said.

And there's some question as to whether the results are applicable to the United States, although Chen believes they are.

"I believe the general finding that large numbers of adults remain susceptible should be broadly applicable," he said. "However, several differences in the population studied should be noted. For instance, the U.S. had two epidemic waves (spring-summer and autumn-winter), while we had one."

"The question is what's going to happen next winter," Blumberg said. "Is the virus going to be worse, the same, is it going to be better? We don't know and, on the basis of past epidemics, it's very hard to predict."

More information

The U.S. Centers for Disease Control and Prevention has more on H1N1.



SOURCES: Mark I.C. Chen, Ph.D., associate consultant, Tan Tock Seng Hospital, Singapore; Kenneth Bromberg, M.D., chairman, pediatrics, The Brooklyn Hospital Center, New York City; Dean Blumberg, M.D., associate professor, pediatric infectious diseases, University of California, Davis, Children's Hospital; April 14, 2010, Journal of the American Medical Association


'/>"/>
Copyright©2010 ScoutNews,LLC.
All rights reserved

Related medicine news :

1. UCLA study compares bypass surgery to angioplasty
2. People living in communities near oil sands can breathe easy: U of A study
3. Brain cancer: Study focuses on forgotten cells
4. New Study Identifies Cause of Severe Disequilibrium and Significant Memory Loss Following Stapedectomy Surgery
5. Uninsured get poor care for migraine: Harvard study
6. Study Questions Use of Heart Device Implants in the Very Old
7. UNC study offers first clinical evidence of anti-cancer drug triggering viral infection
8. M. D. Anderson receives 4.5 million grant, largest ever for study of yoga and cancer
9. 9-country study shows wide variations in how women with early breast cancer are treated
10. Eating disorder cutoffs miss some of sickest patients, Stanford/Packard study finds
11. Study: Social influence playing role in surging autism diagnoses
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:6/25/2016)... (PRWEB) , ... June 25, 2016 , ... On Friday, ... presented a Bronze Wellness at Work award to iHire in recognition of their exemplary ... part of the 7th annual Maryland Workplace Health & Wellness Symposium at the BWI ...
(Date:6/24/2016)... Michigan (PRWEB) , ... June 24, 2016 , ... Those ... deal with these feelings, many turn to unhealthy avenues, such as drug or alcohol ... of Marne, Michigan, has released tools for healthy coping following a traumatic event. , ...
(Date:6/24/2016)... ... June 24, 2016 , ... The Pulmonary Hypertension ... that it will receive two significant new grants to support its work to ... its 25th anniversary by recognizing patients, medical professionals and scientists for their work ...
(Date:6/24/2016)... ... , ... Comfort Keepers® of San Diego, CA is excited to announce they ... to drive cancer patients to and from their cancer treatments. Comfort Keepers provides ... life and ongoing independence. Getting to and from medical treatments is one of ...
(Date:6/24/2016)... ... June 24, 2016 , ... EB Medicine ... Making in Emergency Medicine conference in Ponte Vedra Beach, FL. The awards honor ... Emergency Medicine Practice and Pediatric Emergency Medicine Practice. , “With this ...
Breaking Medicine News(10 mins):
(Date:6/24/2016)... 24, 2016  Consumers have taken a more ... placed more emphasis on patient outcomes. ... in the pharmaceutical industry have evolved beyond just ... companies are focusing on becoming more patient-oriented across ... and services that improve health. ...
(Date:6/24/2016)... 24, 2016 Research and ... "Structural Electronics 2015-2025: Applications, Technologies, Forecasts" report ... In-Mold Electronics, Smart Skin, Structural Health Monitoring, ... Structural electronics involves electronic and/or electrical components ... replacing dumb structures such as vehicle bodies or ...
(Date:6/24/2016)... -- According to a new market research ... Safety Pen Needles), Needle Length (4mm, 5mm, 6mm, 8mm, ... Purchase (Retail, Non-Retail) - Trends & Global Forecasts to ... for the forecast period of 2016 to 2021. This ... 2021 from USD 1.65 Billion in 2016, growing at ...
Breaking Medicine Technology: