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Flu (Influenza)

Below are links to information related to flu. Click on the right menu or scroll down to view general information and programs, research, statistics and guidelines on this topic.

Research, Recommendations and Guidelines


Influenza Vaccination Among Pregnant Women - Massachusetts, 2009-2010
The findings in this report describe acceptance of vaccination by pregnant women in Massachusetts during the 2009–10 influenza season, along with predictors of and barriers to vaccination. Overall, Massachusetts had some of the highest rates of vaccination coverage among the 29 Pregnancy Risk Assessment Monitoring System (PRAMS) states that collected this information. Compared with the median state coverage of 47.1% for seasonal and 40.4% for pH1N1, Massachusetts's coverage was 67.5% and 57.6% respectively.

Surveillance of Influenza Vaccination Coverage -- United States, 2007-08 through 2011-12 Influenza Seasons
During the 2011-12 season, influenza vaccination coverage varied by state, age group, and selected populations (e.g., HCP and pregnant women), with coverage estimates well below the Healthy People 2020 goal. Vaccination coverage among pregnant women was 47.0%, as measured by an Internet panel survey of women pregnant during the influenza season, and 43.0%, as measured by BRFSS during the 2011-12 influenza season. The article includes section on Influenza Vaccination Among Pregnant Women.

Get Vaccinated to Protect You and Your Loved Ones from Flu
Everyone 6 months and older should get an annual flu vaccine. Get vaccinated now so you will be protected all season long.

Influenza Vaccination Coverage Among Pregnant Women — United States, 2012–13 Influenza Season
Influenza vaccination coverage was higher among women reporting both a health-care provider recommendation and offer of influenza vaccination (70.5%) compared with women who received a recommendation but no offer of vaccination (46.3%) and women who received no recommendation (16.1%).


Influenza Vaccination Coverage Among Pregnant Women - 2011-12 Influenza Season, United States (9/30/2012)
The findings in this report indicate that the level of influenza vaccination among pregnant women achieved during the two preceding seasons was sustained during the 2011–12 season.

Update: Influenza Activity -- United States, 2011-12 Season and Composition of the 2012-13 Influenza Vaccine (6/30/2012)
This report summarizes influenza activity in the United States during the 2011-12 influenza season (October 2, 2011-May 19, 2012) and reports the recommendations for the components of the 2012-13 Northern Hemisphere influenza vaccine.

Influenza Vaccination Coverage Among Pregnant Women - 29 States and New York City, 2009-10 Season (3/8/2012)
Results from PRAMS for the 2009-10 influenza season indicate that trivalent seasonal and monovalent pH1N1 vaccination coverage levels among women pregnant during the season were higher than previous seasonal rates, were highly associated with a health-care provider offer or recommendation for vaccination during pregnancy, and varied substantially among states.


Pregnant Women Need a Flu Shot (12/8/2011)
If you're pregnant, a flu shot is your best protection against serious illness from the flu. A flu shot can protect pregnant women, their unborn babies, and even their babies after birth.

Self- Reported Influenza-Like Illness During the 2009 H1N1 Influenza Pandemic - United States, September 2009-March 2010 (1/24/2011)
This report summarizes results from BRFSS surveys conducted during September 2009--March 2010. Among 216,431 adults and 43,511 children (aged <18 years), the average monthly percentage of respondents reporting ILI in the 30 days preceding the interview was 8.1% among adults.

Seasonal Influenza and 2009 H1N1 Influenza Vaccination Coverage Among Pregnant Women - 10 States, 2009-10 Influenza Season (1/10/2011)
To estimate influenza vaccination coverage among pregnant women during the 2009--10 influenza season, CDC analyzed data from 10 states from the Pregnancy Risk Assessment Monitoring System . This report summarizes the results of that analysis, which determined that vaccination coverage for pregnant women among the 10 states combined was 50.7% for seasonal influenza and 46.6% for 2009 H1N1.


2009 Pandemic Influenza A (H1N1) in Pregnant Women Requiring Intensive Care - New York City, 2009 (4/15/10)
The findings indicated that, during 2009, 16 pregnant women and one who was postpartum were admitted to intensive-care units. Two women died. (4/15/10)

Patients Hospitalized with 2009 Pandemic Influenza A (H1N1) - New York City, May 2009 (2/24/10)
Approximately 60% of admitted patients were aged <18 years. The most commonly documented underlying condition was asthma, observed among 50% of patients aged <18 years and 46% of adult patients. Among the 24 female patients aged 15-49 years at the time of hospital admission, seven (29%) were pregnant or within 10 days after delivery, of whom four had additional underlying conditions.

Outbreak of 2009 Pandemic Influenza A (H1N1) at a School - Hawaii, May 2009 (2/24/10)
This report summarizes the results of the investigation, which detected an outbreak of pandemic H1N1 cases at the school over the ensuing 3 weeks. A total of 16 cases were identified; all patients recovered with no hospitalizations or deaths. HDOH, the school, and the Hawaii Department of Education (HDOE) instituted an education campaign asking students and employees to stay home if ill. After consulting with HDOH, school officials decided not to close the school; the outbreak ended after 19 days.

Impact of Seasonal Influenza-Related School Closures on Families - Southeastern Kentucky, February 2008 (1/11/10)
This report summarizes a survey, which indicated that 97.0% of respondents agreed with the decision to close schools. In 29.1% of households, an adult had to miss work to provide child care, and in 15.7% of households, at least one adult lost pay because of missed work.

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