Flu (Influenza)

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Fast Stats A-Z: Influenza Statistics

Seasonal Flu (Influenza)

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Influenza (Flu) Patient and Provider Education Materials

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Research

2012

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.

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2011

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.

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2010

Seasonal Flu Videos in American Sign Language (8/31/10)
The University of Rochester Prevention Research Center and the Deaf Wellness Center partnered with CDC's Community Health Outreach and Education Section to create informational videos in American Sign Language about the seasonal flu.

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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2009

Influenza Vaccination Coverage Among Children and Adults - United States, 2008-09 Influenza Season (11/12/09)
This report summarizes the results of the analysis, which indicated that reported influenza vaccination coverage of ≥1 doses was 40.9% for ages 6-23 months, 32.0% for 2-4 years, and 20.8% for 5-17 years. Among adults, reported coverage was 32.1% for persons aged 18-49 years with high-risk conditions, 42.3% for persons 50-64 years, and 67.2% for persons ≥65 years.

Updated Interim Recommendations for Obstetric Health Care Providers Related to Use of Antiviral Medications in the Treatment and Prevention of Influenza for the 2009-2010 Season (10/13/09)
Pregnant women are at higher risk for severe complications and death from influenza, including both 2009 H1N1 influenza and seasonal influenza. Treatment with oseltamivir (Tamiflu®) or zanamivir (Relenza®) is recommended for pregnant women with suspected or confirmed influenza and can be taken during any trimester of pregnancy.

Receipt of Influenza Vaccine during Pregnancy among Women With Live Births- Georgia and Rhode Island, 2004-2007 (10/13/09)
This report showed that in Georgia, the prevalence of influenza vaccination during the woman's most recent pregnancy increased from 10.4 percent in 2004 to 15.5 percent in 2006. In Rhode Island, vaccination prevalence increased from 21.9 percent in 2004 to 33.4 percent in 2007. Increased efforts are needed to assess vaccine coverage during pregnancy and to educate providers and pregnant women.

Questions and Answers: Use of Antiviral Medicines for the Treatment and Prevention of Flu among Pregnant Women for the 2009-2010 Season (10/13/09)
Pregnant women who are healthy have had severe illness from the 2009 H1N1 flu (also called “swine flu”). Compared with people in general, pregnant women with 2009 H1N1 flu have been more likely to be admitted to hospitals, and some have died. CDC advises doctors to give antiviral medicines that treat 2009 H1N1 flu to pregnant women who have symptoms of flu.

Use of Influenza A (H1N1) 2009 Monovalent Vaccine: Recommendations of the Advisory Committee on Immunization Practices (ACIP), 2009 (9/30/09)
Five initial target groups have been identified for vaccination efforts. Priorities have been established for a subset of persons within the initial target groups in the event that initial vaccine availability is unable to meet demand. Guidance is provided on use of vaccine in other adult population groups as vaccine availability increases.

Reproductive Health and Novel H1N1 Flu (9/30/09)
CDC is concerned about women and their families when there are threats from disease or disasters. This includes women who may be pregnant, who have recently been pregnant, may be trying to conceive, or who are considering reproductive health treatments. Special health information on novel H1N1 flu is updated continually and provided for a variety of groups and audiences.

H1N1 2009 Influenza Virus Infection during Pregnancy in the USA (Lancet) (8/10/09)
The article describes the cases of 34 pregnant women who contracted novel H1N1 influenza virus infection in the United States during the first month of the outbreak (mid-April–mid-May 2009). Thirty-one had confirmed infections, and three were probable infections. This report was published in Lancet online ahead of print publication for July 29, 2009.

CDC Advisors Make Recommendations for Use of Vaccine against Novel H1N1 (8/10/09)
CDC's Advisory Committee on Immunization Practices developed recommendations on who should receive vaccine against novel influenza A (H1N1) when it becomes available. Five key priority populations include pregnant women and people who live with or care for children younger than 6 months of age.

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