Influenza News

During influenza season week 3, from Jan. 16 to Jan. 22, 1,754 of 5,823 specimens tested by WHO and the National Respiratory and Enteric Virus Surveillance System were positive for influenza, bringing the total number of influenza cases to 14,806 since Oct. 3, according to the CDC’s weekly FluView report.

From Jan. 9 to Jan. 15, 1,288 of 4,983 specimens tested by WHO and the National Respiratory and Enteric Virus Surveillance System were positive for influenza, bringing the total number of influenza cases to 11,425 since Oct. 3, according to the CDC’s weekly FluView report.

During influenza season week 1, from Jan. 2 to Jan. 6, 706 of 4,331 specimens tested by WHO and the National Respiratory and Enteric Virus Surveillance System were positive for influenza, bringing the total number of influenza cases to 8,764 since Oct. 3, according to the CDC’s weekly FluView report.

During influenza season week 52 (December 26–January 1), 995 of 4,911 specimens tested by WHO and the National Respiratory and Enteric Virus Surveillance System were positive for influenza, bringing the total number of influenza cases to 6,611 since October 3, 2010, according to the CDC’s weekly FluView report.

During influenza season week 51 — Dec. 19 to Dec. 25 — 689 of 3,284 specimens tested by WHO and the National Respiratory and Enteric Virus Surveillance System were positive for influenza, bringing the total number of influenza cases to 4,864 since Oct. 3, according to the CDC’s weekly FluView report.

A monovalent H1N1 vaccine effectively protected schoolchildren and adults against the pandemic strain of influenza after a mass vaccination campaign in Beijing.

An oil-in-water adjuvanted pandemic (H1N1) 2009 vaccine demonstrated high vaccine efficacy in children and young adults in England, according to researchers from the Health Protection Agency Centre for Infections in London.

During influenza season week 50 — Dec. 12 to Dec. 18 — 744 of 4,733 specimens tested by WHO and the National Respiratory and Enteric Virus Surveillance System were positive for influenza, bringing the total number of influenza cases to 3,907 since Oct. 3, according to the CDC’s weekly FluView report.

Based on the results of the first head-to-head comparison of two 2009 H1N1 influenza vaccines in adults, increased immunogenicity was observed for the adjuvanted split-virus H1N1 vaccine when compared with the whole-virus vaccine. Conversely, the adjuvanted vaccine was associated with more systemic and local adverse events.

During influenza season week 49 (Dec. 5-11), 363 of 3,295 specimens tested by WHO and the National Respiratory and Enteric Virus Surveillance System were positive for influenza, bringing the total number of influenza cases to 2,807 since Oct. 3, according to the CDC’s weekly FluView report.