Navigation Links
Reassuring findings for mothers who have influenza vaccine while pregnant
Date:9/23/2013

Researchers from the University of California, San Diego School of Medicine and Boston University, in collaboration with the American Academy of Allergy Asthma and Immunology (AAAAI), have found evidence of the H1N1 influenza vaccine's safety during pregnancy. The national study, which was launched shortly after the H1N1 influenza outbreak of 2009, is summarized in two companion papers published online on September 19 in the journal Vaccine.

"The overall results of the study were quite reassuring about the safety of the flu vaccine formulations that contained the pandemic H1N1 strain," said Christina Chambers, PhD, MPH, Director of the non-profit Organization of Teratology Information Specialists (OTIS) Research Center and lead investigator of UC San Diego's team. "We believe our study's results can help women and their doctors become better informed about the benefits and risks of flu vaccination during pregnancy."

Despite federal health authorities' recommendations that all pregnant women be vaccinated for influenza, it is estimated that less than 50 percent of women follow this advice, largely because they are concerned about the effects flu vaccines might have on the developing baby.

Since it was anticipated that the 2009 H1N1 influenza season would be severe, a national study was launched by the Vaccines and Medications in Pregnancy Surveillance System (VAMPSS), a collaboration between UC San Diego School of Medicine and Boston University and coordinated by AAAAI to gather data on the safety of this vaccine during pregnancy.

The team from UC San Diego followed 1,032 pregnant women across the United States and Canada who either chose to receive an influenza vaccine or were not vaccinated during one of the three seasons from 2009-2012. Women were recruited through MotherToBaby, a service of OTIS.

Chamber's team found that women vaccinated during pregnancy were no more likely to experience miscarriage, have a baby born with a birth defect or have a baby born smaller than normal compared with those who did not receive a vaccination. Although vaccinated women were more likely to have their babies before term, on average these infants were delivered three days earlier than those born to unvaccinated women.

The VAMPSS team from Boston University's Slone Epidemiology Center interviewed 4,191 mothers from four regional centers in the United States, who had either delivered a baby with one of 41 specific birth defects or delivered a normal infant. They compared the use of influenza vaccine in the two groups during the 2009-2011 seasons. The team also compared the risk of preterm delivery in vaccinated versus unvaccinated women. Overall, no significant evidence of an increased risk of any specific birth defects was noted. While the team did observe a slight increase in preterm delivery rates among pregnant women who received the H1N1 vaccine specifically during the 2009-2010 season, vaccinated women overall only delivered an average of two days earlier compared to the unvaccinated group. For those vaccinated during 2010-2011, the situation was reversed, and vaccinated women were less likely to deliver a preterm baby.

"We found no meaningful evidence of an increase in risk for many specific major birth defects if a woman received the flu shot early in pregnancy," said Carol Louik, ScD, lead investigator of the Boston University team. "A concern about the risk of specific birth defects was a critical question that has not been considered very much until now, and our data are reassuring."


'/>"/>

Contact: Nicole Chavez
ncchavez@ucsd.edu
858-246-1745
University of California - San Diego
Source:Eurekalert

Related medicine news :

1. Reassuring evidence: Anticancer drug does not accelerate tumor growth after treatment ends
2. New findings in breast cancer
3. Kessler Foundation scientists present cognitive research findings at MS dual symposium
4. Researchers present new findings for novel pancreatic cancer vaccine
5. Mayo Clinic urologists present findings at American Urological Association Annual Meeting
6. Once-Banned Bird Flu Study Yields Sobering Findings
7. Columbus Allergist Dr. Summit Shah Discusses Recent Findings on Food Allergies and Exercise-Induced Anaphylaxis
8. Relief for Migraine Sufferers as The Life House Offers New Findings, Free Consults
9. New findings by GW researcher break tanning misconceptions: There is no such thing as a safe tan
10. MRI findings shed light on multiple sclerosis
11. Unexpected findings at multi-detector CT scans: Less reason to worry
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:2/22/2017)... ... February 22, 2017 , ... Sideline Products participated in the World Horse Expo ... Tom Seay and his production crew. Tom Seay’s program “Best of America by ... Saddle Sidekicks will be featured on April 6, 2017. After the broadcast, the ...
(Date:2/22/2017)... ... February 22, 2017 , ... ANGLESTRONG , the new ... now available on the App Store and Google Play . Florida-based ... the addiction and recovery industry, partnered with Angle to build ANGLESTRONG. The new recovery ...
(Date:2/22/2017)... ... , ... A product of digesting a micronutrient found in soy may hold ... soy foods, while others do not, a University of Pittsburgh Graduate School of Public ... made by some types of “good” gut bacteria when they metabolize isoflavones (micronutrients found ...
(Date:2/22/2017)... ... , ... Super-Sod will attend the Athens Home Show with a brand new ... from Super-Sod’s simple Athens Home Show booth of 2016, this year’s exhibit space includes ... Chris Roquemore constructed furniture from recycled pallet wood at the Super-Sod farm in Fort ...
(Date:2/22/2017)... ... ... BrightStar Care Charleston , a home care and medical staffing agency, will ... on Aging’s Senior Expo on Thursday, March 23, 2017, at the Omar Convention ... our community. We are thrilled to participate in this event because we believe it ...
Breaking Medicine News(10 mins):
(Date:2/22/2017)... , February 22, 2017 ... the Dow Jones Industrial Average, and the S&P ... out of nine sectors ended Tuesday,s trading session ... sentiment, Stock-Callers.com assessed the following Medical Instruments & ... (NASDAQ: TNDM), C. R. Bard Inc. (NYSE: BCR), ...
(Date:2/22/2017)... Calif. , Feb. 22, 2017  Bioness, Inc., ... therapies, today announced the first series of successful StimRouter ... at Radboud University Medical Center (Nijmegen, Netherlands ... ( Cork, Ireland ), and Kliniek Park ... the successful launch continuing, Bioness plans to further support ...
(Date:2/22/2017)... PUNE, India , February 22, 2017 According ... (Spectroscopy, Chromatography), Measurement (On-Line, In-Line, At-Line), Products and Services (Analyzers, Probes & ... to 2021", published by MarketsandMarkets, the global market is poised to reach ... a CAGR of 13.3% from 2016 to 2021. ... ...
Breaking Medicine Technology: