Flu Activity is Increasing

Flu activity is increasing, but it's not too late to protect yourself. Visit SBCHC to get your flu shot today. Walk-ins welcome.

The Centers for Disease Control and Prevention (CDC) released a report on December 29, 2018, stating that flu activity in the United States has increased. Below is a summary of their findings. Visit the CDC website to read the full article. 


The World Health Organization (WHO) and the National Respiratory and Enteric Virus Surveillance System (NREVSS) collaborating laboratories, which include both public health and clinical laboratories in all 50 states, Puerto Rico, Guam, and the District of Columbia, report to CDC the total number of respiratory specimens tested for influenza and the number positive for influenza by virus type. The results of tests performd by clinical laboratories are summarized below.

  Week 52 Data Cumulative since 9/30/2018 (Week 40)
No. of specimens tested 26,603 308,266
No. of positive specimens (%) 3,636 (13.7%) 18,096 (5.9%)
Positive Specimens by type    

Influenza A

3,532 (97.1%) 16,776 (92.7%)

Influenza B

104 (2.9%) 1,320 (7.3%)



Below is a weekly influenza surveillance report prepared by the Influenza Division. The graphic shows Influenza-Like Illness (ILI) activity levels determined by data reported to ILINet.  

Geographic Spread of Influenza

The influenza activity reported by state and territorial epidemiologists indicates georgraphic spread of influenza viruses, but does not measure the severity of influenza activity. During week 52, widespread influenza activity was reported by 24 states, including Massachusetts.



Source: Centers for Disease Control and Prevention. www.cdc.gov