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According to the US's latest weekly report on influenza surveillance in the United States (CDC), influenza activity continues to grow in the United States. Influenza A (H1N1) viruses pdm09, A (H3N2) and B continue to co-circulate.
The report indicates that in the week ending 2 February, the proportion of outpatient visits for ILI increased by 4.3%, which is above the national baseline of 2.2%. In addition, the geographical spread of influenza in Puerto Rico and in 47 states was reported as widespread, two states reported regional activity, the District of Columbia and one state a local activity, the US Virgin Islands reported sporadic activity and Guam has not reported.
With respect to hospitalizations, the report indicates that a cumulative rate of 20.1 laboratory-confirmed influenza-badociated hospitalizations per 100,000 population was reported, with the highest hospitalization rate among years and older. The report also indicates that four pediatric deaths badociated with influenza have been reported to CDC during this week.
According to CDC recommendations for travelers, all people six months of age and older must be vaccinated every year, ideally in the fall before the start of the flu season in the United States. It also recommends people with flu-like symptoms such as sore throat, runny or stuffy nose, muscle or body aches, headaches and fatigue of not traveling.
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