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The article discusses the influenza cases in the U.S. during October 3, 2010-February 5, 2011. It claims that during the period, around 140 World Health Organization (WHO) and National Respiratory and Enteric Virus Surveillance System (NREVSS) have tested respiratory specimens for influenza viruses, of which 19.5% were tested positive. Seventy-three percent of the positive cases were influenza A viruses and 27% were influenza B viruses.

This article presents an update on influenza activity in the U.S. from October 3 to December 11, 2010. Data showed low influenza activity in most regions of the country. World Health Organization (WHO) and National Respiratory and Enteric Virus Surveillance System collaborating laboratories reported 2,807 cases of influenza, with 57 percent were identified as cases of influenza A viruses.

The article reports influenza activity from June 13 to September 25, 2010, both in the U.S. and worldwide. The types of influenza discussed are influenza A (H1), influenza A (H3) and Influenza B viruses. The information gathered is from the U.S. Centers for Disease Control and Prevention (CDC), the World Health Organization (WHO) and the National Respiratory and Enteric Virus Surveillance System (VREVSS). Worldwide cases of influenza A viruses (H1) were rarely reported before July, and influenza A (H3) viruses were dominate during late August.

The article offers updates on the influenza endemic activity during the 2009-2010 influenza season in the U.S. It notes that the detected second wave of the H1N1 influenza A which peaked in late-October 2009 resulted in higher pediatric mortality and higher hospitalization rates in children and young adults in various U.S. states. It also accounts the highest proportion of outpatient visits to healthcare providers and clinics for influenza-like illness (ILI) in the U.S. during the 2009-2010 influenza season.

The article summarizes the influenza activity in the U.S. from August 30, 2009 through March 27, 2010 and reports on the Northern Hemisphere influenza vaccine strain selection from 2010-2011. During the said period, 89,585 out of 422,648 specimens were tested positive for influenza. The week ending October 24, 2009 is cited as the period wherein the largest number of states reported widespread activity. It is noted that vaccination with 2009 H1N1 vaccine is still the key strategy to prevent 2009 H1N1 influenza infection.

The article summarizes the influenza activity in the U.S. from August 30, 2009 through January 9, 2010. During this time period, the World Health Organization and the National Respiratory and Enteric Virus Surveillance System tested 310,151 respiratory specimens for influenza viruses. The Centers for Disease Control and Prevention provided surveillance for resistance of circulating influenza viruses to influenza antiviral medications adamantanes and neuraminidase inhibitors. January and February are months when seasonal influenza activity rise.

The article offers un update on influenza activities in the U.S. from August 30 to October 31, 2009. The World health Organization (WHO) and National Respiratory and Enteric Virus Surveillance System (NREVSS) found that 30 percent of the 163,123 respiratory specimens they tested were positive for the influenza virus. The CDC also tested antiviral resistance of influenza viruses, including the H1N1 virus.

The article reports on the number of infections of the pandemic influenza A (H1N1) virus in the U.S. from April to August 2009. It states that the virus activity was highest in May and June 2009 and decreased in the following two months. The Centers for Disease Control and Prevention (CDC) uses several systems to monitor the spread of the virus. The recommendations of the Advisory Committee about immunization programs are also presented.

The article presents a summary report of the U.S. influenza activity from September 28, 2008 to April 4, 2009 and the composition of the influenza vaccine for 2009-2010. From October 2008 to early January 2009, low levels of influenza activity was noted but increased from mid-January and peaked in mid-February 2009. The World Health Organization suggested that the 2009-10 Northern Hemisphere trivalent influenza vaccine contain the A/Brisbane/59/2007-like (H1N1), A/Brisbane/10/2007-like (H3N2), and B/Brisbane/60/2008-like (B/Victoria lineage) viruses.

The article summarizes U.S. influenza activity from September 30, 2007 to April 5, 2008. More influenza A viruses than influenza B viruses have been identified in surveillance regions. The percentage of outpatient visits for inluenza-like illness reported by sentinel providers was 1.7%. The percentage of outpatient visits for acute respiratory illness was 2.2%. From February 10-23, 49 states reported widespread influenza activity and one state reported regional activity.

The article summarizes influenza activity in the U.S. from September 30, 2007 to February 9, 2008. It is stated that influenza activity remained low in the U.S. from September through early December 2007, while influenza activity increased from early December through the end of the year and has continued to increase from January to February 2008.

The article summarizes the influenza activity in the U.S. from September 30-December 1, 2007. Weekly percentages of outpatient visits for influenza-like illness reported by approximately 1,300 sentinel providers in the country in 50 states, New York City, Chicago, Illinois and Washington, D.C. have ranged from 0.9% to 1.6%.

The article summarizes influenza activity in the U.S. and worldwide from May 20-September 15, 2007. Data from the U.S. Influenza Sentinel Provider Surveillance System indicated that the weekly rate of patient visits to sentinel providers for influenza-like illness remained below the national baseline of 2.1 percent. During the period, a total of 21 human cases of avian influenza A infection were reported to the World Health Organization from China, Egypt, Indonesia and Vietnam.

The article summarizes influenza activity in the U.S. and worldwide during the 2006-2007 influenza season and describes the composition of the 2007-2008 influenza vaccine. In the U.S., the national percentage of respiratory specimens testing positive for influenza and the proportion of outpatient visits to sentinel providers for influenza-like illness peaked in February 2006. The percentage of deaths attributed to pneumonia and influenza did not exceed the threshold in key cities surveyed in the report.

The article offers a look at the epidemiology of influenza in the U.S. from October 1 to December 9, 2006. It highlights the findings of the influenza virus surveillance conducted by the World Health Organization and the National Respiratory and Enteric Virus Surveillance System in the U.S. It mentions the antigenic characterization efforts launched in the country. The article also explores the mortality rate associated with pneumonia and influenza.

This article examines the influenza activity in the U.S. and worldwide during the 2005-2006 influenza season, as well as the composition of the influenza vaccine for the 2006-2007 season. The predomination of influenza A viruses is noted during most of the season in the U.S. but influenza B viruses were more frequently identified during late April through May. Worldwide, influenza B viruses were reported generally in many European countries, and influenza A and influenza B viruses prevailed in Asia.

The article presents an update on influenza activity in the U.S. from October 2, 2005 through December 5, 2005. Statistical data were released by U.S. laboratories in relation to influenza activity across the country. A number of influenza-related pediatric deaths occurred in the U.S. from 2004 to 2005. The U.S. Centers for Disease Control and Prevention uses two population-based surveillance networks to monitor laboratory-confirmed influenza-associated pediatric hospitalizations.

Reports on the trend of influenza activity worldwide covering the 2003-2004 season and the composition of influenza vaccine for 2004 and 2005. Percentage of respiratory specimens tested for influenza viruses in the U.S. which were found to be positive; Number of influenza viruses collected by U.S. laboratories and characterized by the Centers for Disease Control and Prevention since October 1, 2003; Countries where influenza outbreaks occurred during October 2003 to May 2004.

Presents news briefs from the United States Centers for Disease Control and Prevention as of March 6, 2002. Cases of measles in the U.S.; Revision of the 1996 guidelines for the prevention of perinatal group B streptococcal disease; U.S. Department of Defense preliminary evaluation of the association of anthrax vaccination and congenital anomalies; Influenza activity in the U.S.

The article discusses influenza activity in the U.S. from October 3 to December 11, 2010. A total of 2,807 respiratory specimens were found to be positive for influenza viruses. Most of the cases have been reported from Region 4, the region where influenza B viruses have been reported more frequently. During the 2010-2011 season, the Centers for Disease Control and Prevention (CDC) has antigenically characterized 89 influenza viruses collected by laboratories. For 6.9% of all deaths reported to the Cities Mortality Reporting System, pneumonia and influenza was blamed as an underlying cause of death.

The article presents a report from the U.S. Centers for Disease Control and Prevention (CDC) on the prevalence of influenza in the United States between September 28 and November 29, 2008. Influenza activity was reported to remain low in the U.S. during the time period. Antigenic characterization by the CDC and antiviral resistance of influenza virus isolates are discussed. State-specific activity levels and outpatient illnesses are also included. Pediatric hospitalizations and mortality associated with influenza are also discussed.

The article presents an update on influenza activity in the U.S. and worldwide between May 21 to September 9, 2006. Seven systems are used by the U.S. Centers for Disease Control and Prevention for national influenza surveillance of which four are operating year-round. These include the World Health Organization and the U.S. Influenza Sentinel Provider Surveillance System. Between the given period, various influenza viruses cocirculated worldwide of which influenza A viruses are dominant in Asia and influenza B viruses are dominant in Japan.

Presents a report which summarizes the influenza activity during October 3, 2004 to January 1, 2005 in the U.S. Doses of inactivated influenza vaccine purchased by the Department of Health and Human Services from pharmaceutical company GlaxoSmithKline; Number of U.S. states which had reported widespread or regional influenza activity for the week ending October 9, 2004.

This article focuses on a summary by the U.S. Centers for Disease Control and Prevention on influenza activity in the U.S. and worldwide from May 21 through September 9, 2006. Statistics for influenza A and B viruses in the U.S. are given and for the predominant viruses worldwide. Instances of avian influenza are given. Influenza A and B viruses cocirculated around the globe. The influenza virus type and subtype that will predominate and the severity of influenza-related disease for the 2006-2007 season is difficult to predict.

Presents information on influenza activity in the U.S. and internationally between May and October of 2004. Description of influenza surveillance systems in the U.S; Efforts to track pediatric death associated with influenza in the U.S.; Details of international influenza activity, primarily in Africa and Asia.