Influenza activity in Maryland increased slightly during week 18, most of it associated with our investigations into suspected cases of novel H1N1 ("Swine") Influenza. As well as detecting cases of the novel H1N1 virus, DHMH laboratories also identified infections with seasonal influenza. Also, the 3 reported outbreaks in this week's report are associated with the novel H1N1 virus. State activity code = "REGIONAL"
Influenza activity in Maryland decreased slightly during week 19. The southern influenza surveillance region was the only region to report an increased proportion of visits due to ILI and lab-confirmed cases. As well as detecting cases of the novel H1N1 ("Swine") virus, DHMH laboratories also identified infections with seasonal influenza (types A and B).
The number of type A (H1N1)-Swine flu isolates continued to increase. The percent of clinical lab tests that are positive also continued to increase. ILI and other syndromic data did not show any significant increases.
Influenza activity is geographically widespread Proportion of positive lab results is lower but still above expected levels for the summer months in Maryland Four influenza outbreaks were reported during week 27
Cases continue to be reported from all over the state Outbreaks reported from Eastern Shore Baltimore Metro and Southern Maryland Regions Activity at widespread higher than expected for this time of the year
