During week 49,December 1-7,2013,influenza activity continued to increase in the United States,the CDC reported.Of 6219 specimens tested,13.3% were influenza positive.The proportion of deaths attributed to pneumonia and influenza was below the epidemic threshold.*
A cumulative rate of 2.0 lab-confirmed influenza-associated hospitalisations per 100,000 people was reported.The proportion of outpatient visits was 2.1%,above the national baseline of 2.0.Influenza A accounted for 94.0% of cases;Influenza B for 6.0%.*
The gulf states of Alabama,Mississippi and Texas had a high level of influenza activity;Lousiana was moderate.The rest of the country had minimal to low activity.*
As flu season peaks in the winter months,it is still advisable to be vaccinated.It takes two weeks for the vaccine to take effect.It is on average 56% effective at totally preventing flu,but is also believed to lessen the severity of cases that are contracted.
Last year,164 children died of influenza in the US.About 24,000 adults are estimated to die of the disease each year,90% of them age 65 or older.
The vaccine is available everywhere from pharmacies to walk-in clinics and doctor's offices.The young,the old,and those with chronic health conditions are especially vulnerable to influenza.
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