CDC: Flu activity still up in U.S. in fourth week of 2013

CDC: flu activity still up in U.S. in fourth week of 2013
In the fourth week of 2013, influenza activity remained elevated in the United States, with the proportion of pneumonia and influenza-linked deaths above the epidemic threshold, according to FluView, a weekly influenza surveillance report prepared by the Influenza Division of the U.S. Centers for Disease Control and Prevention.

(HealthDay)—In the fourth week of 2013, influenza activity remained elevated in the United States, with the proportion of pneumonia and influenza-linked deaths above the epidemic threshold, according to FluView, a weekly influenza surveillance report prepared by the Influenza Division of the U.S. Centers for Disease Control and Prevention.

Researchers from the CDC collected data from and National Respiratory and Enteric Surveillance System collaborating laboratories, located in all 50 states and Puerto Rico, to examine the number of respiratory specimens tested for influenza during the fourth week of 2013.

The researchers found that 25.5 percent of the 10,581 specimens tested and reported were positive for influenza. Of these, 79.3 percent were influenza A (2.5 percent 2009 H1N1, 49.2 percent H3, and 48.3 percent subtyping not performed) and 20.7 percent were influenza B. During week four of 2013, 9.4 percent of all deaths were due to pneumonia and influenza, above the epidemic threshold of 7.4 percent. There were eight influenza-associated . The cumulative rate of laboratory confirmed influenza-linked hospitalizations was 25.9 per 100,000 population; more than 50 percent of these were among adults aged 65 years and older. Nationwide, 4.2 percent of outpatient visits were due to influenza-like illness, which was above the national baseline of 2.2 percent. Widespread geographic was reported in 42 states.

"Since the start of the season, influenza A (H3N2) viruses have predominated nationally," the authors write. "Over the course of the season the predominant circulating virus has varied by state and by region."

More information: FluView

add to favorites email to friend print save as pdf

Related Stories

CDC: Influenza activity increasing across the U.S.

Jan 05, 2013

(HealthDay)—Flu season descended on the United States early and hard this winter, with significant increases in flu activity observed over the past month, according to an update issued Jan. 4 by the U.S. ...

Google Flu Trends estimates off

May 17, 2010

Google Flu Trends is not as accurate at estimating rates of laboratory-confirmed influenza as CDC national surveillance programs, according to a new study from the University of Washington.

US flu epidemic worsens, 29 children dead

Jan 19, 2013

A flu epidemic gripping the United States is more severe than usual, striking the elderly especially hard, health authorities said Friday as they also announced 29 child victims.

Recommended for you

Obama addresses West Africans on facts about Ebola

9 hours ago

President Barack Obama urged West Africans on Tuesday to wear gloves and masks when caring for Ebola patients or burying anyone who died of the disease. He also discouraged the traditional burial practice ...

Gluten-free diet benefits asymptomatic EmA+ adults

9 hours ago

(HealthDay)—Asymptomatic individuals with endomysial antibodies (EmA) benefit from a gluten-free diet (GFD), according to a study published in the September issue of Gastroenterology.

Another US health worker infected with Ebola

10 hours ago

A third American health worker has tested positive for the Ebola virus while working with patients in West Africa, the Christian missionary group SIM said Tuesday.

UN implores all countries to help on Ebola

12 hours ago

The international group Doctor Without Borders warned Tuesday that the world is 'losing the battle' against Ebola, while U.N. officials implored all countries to quickly step up their response by contributing health experts ...

Travel restrictions could worsen Ebola crisis: experts

16 hours ago

Travel restrictions could worsen West Africa's Ebola epidemic, limiting medical and food supplies and keeping out much-needed doctors, virologists said Tuesday as the disease continued its deadly spread.

User comments