Navigation Links
Many Vaccine Booster Shots Unnecessary: Study
Date:11/7/2007

For some infections, immunization lasts much longer than previously assumed

WEDNESDAY, Nov. 7 (HealthDay News) -- Americans may be over-vaccinated against some diseases, according to a study that found the duration of protective immunity for many vaccines is greatly underestimated.

That means many people may be getting booster shots even though their immunity levels are adequate, the researchers say.

Based on the findings, it may be necessary to reevaluate timelines for vaccinating and revaccinating Americans against disease, said the Oregon Health & Science University researchers.

For this study, they analyzed 630 blood samples from 45 volunteers to determine each person's level of immunity against measles, mumps, rubella, chickenpox, mononucleosis, tetanus and diphtheria over an extended period of time.

"The goal of this study was to determine how long immunity could be maintained after infection or vaccination. We expected to see long-lived immunity following a viral infection and relatively short-lived immunity after vaccination, especially since this is the reasoning for requiring booster vaccinations," Mark Slifka, an associate scientist at the Vaccine and Gene Therapy Institute, said in a prepared statement.

"Surprisingly, we found that immunity following vaccination with tetanus and diphtheria was much more long-lived than anyone realized, and that antibody responses following viral infections were essentially maintained for life," he said.

The study is published in the Nov. 8 issue of the New England Journal of Medicine.

"We want to emphasize that proper vaccination is vital for protecting people against infectious disease. We also need to mention that over-vaccinating the population poses no health or safety concerns -- it may just be unnecessary under certain circumstances," said Slifka, who has joint appointments at the Oregon National Primate Research Center and the department of molecular microbiology and immunology in the OHSU School of Medicine.

"What our study found was that the life span of protective immunity for certain vaccines is much longer than previously thought. So, what does that mean? Based on this data and other studies, we may want to consider adjusting some of our recommended vaccination schedules," Slifka said. "Doing so may reduce the number of required shots that are administered each year in this country while at the same time help extend limited health care resources."

More information

The U.S. Centers for Disease Control and Prevention has more about vaccines.



-- Robert Preidt



SOURCE: Oregon Health & Science University, news release, Nov. 7, 2007


'/>"/>
Copyright©2007 ScoutNews,LLC.
All rights reserved

Related medicine news :

1. DNA vaccine against multiple sclerosis appears safe, potentially beneficial
2. HPV vaccine does not appear to be effective for treating pre-existing HPV infection
3. Vaccine Stops Alzheimers Brain Tangles
4. Human Papilloma Virus vaccines may decrease chances of oral cancer
5. U.S. Teens Fall Short on Vaccine Coverage
6. Nasal Anthrax Vaccine Proves Effective in Animal Study
7. Hot ice, measuring depression, perfect invisibility and flu vaccine incentives
8. Bioniche Receives $2 Million Government Grant For Market Development Related to its E. coli O157:H7 Cattle Vaccine
9. Iomai Patch-Based Vaccine Cut Rate of Travelers Diarrhea by 75 Percent in Phase 2 Field Study
10. FDA approves expanded label for FluMist (influenza virus vaccine live, intranasal) to include childr
11. MedImmune Licenses Reverse Genetics Technology to GlaxoSmithKline for Use in Influenza Vaccine Development and Production
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:5/5/2016)... ... May 05, 2016 , ... ... for veterinary professionals across the United States. The whole food nutrient solutions company ... patients and giving dog, cat and horse owners’ peace of mind. With the ...
(Date:5/5/2016)... ... May 05, 2016 , ... ... a talk highlighting the organization’s successful Care Transitions program at the ... talk was titled “Minimizing Costs in the Post-Acute Environment Through Effective Transitions of ...
(Date:5/5/2016)... ... ... In honor of National Nurses Week 2016, Aya Healthcare , the ... thank a nurse who's made a difference in their life. From Friday, May 6 ... of San Diego/Imperial Counties (up to $10,000) every time someone tells them via social ...
(Date:5/5/2016)... ... May 05, 2016 , ... United Collection Bureau, Inc. ... Clark brings more than 15 years of experience within the healthcare revenue cycle industry. ... career as the Director of Patient Financial Services at Spectrum Health. While at Spectrum ...
(Date:5/5/2016)... ... May 05, 2016 , ... ... for iOS and Android devices. VisualDx is the first point of care ... support across general medicine. The system speeds diagnosis, therapy decisions and patient ...
Breaking Medicine News(10 mins):
(Date:5/4/2016)... May 4, 2016 ... the  "Global Acute Myeloid Leukemia Market and ... their offering.       (Logo: ... Leukemia Market and Competitive Landscape Highlights 2016, ... pipeline products, Acute Myeloid Leukemia epidemiology, Acute ...
(Date:5/3/2016)... 3, 2016 BioNovus Innovations LLC and ... Advancing Medical Innovation (IAMI) today announced a new ... and medical devices. An agreement between ... to license, develop and commercialize medical innovations advanced ... "This partnership represents a significant advance in our ...
(Date:5/3/2016)... Pa. , May 3, 2016 ACME ... Jack Whelan and Delaware County ... (naloxone HCI) Nasal Spray in all ACME ... U.S. Centers for Disease Control and Prevention (CDC), naloxone has saved ... when police officers in Delaware County were ...
Breaking Medicine Technology: