Annual Summary of Disease Activity:
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Respiratory Syncytial Virus, 2018
Beginning September 2016, laboratoryconfirmed respiratory syncytial virus disease (RSV) became reportable for all hospitalized residents of the metropolitan area. Any death occurring statewide within 60 days of a positive RSV test is also reportable.
From October 1, 2018–April 30, 2019, 721 cases were reported (12.9 cases per 100,000 persons) compared to 1,090 cases (18.8 cases per 100,000) from October 2017-April 2018. The median age was 9 months (range: 8 days–98 years). Forty percent (285) were <6 months, 15% (109) were 6-11 months, 16% (117) were 1 year to <2 years, 9% (68) were 2-4 years, 3% (24) were 5–17 years, 2% (12) were 18–49 years, 4% (27) were 50–64 years, and 11% (79) were >65 years of age. Overall, 53% of RSV cases were male and 48% were white.
Forty-one percent of cases had a co-morbid condition at the time of their illness, and the presence of a co-morbid condition increased significantly as age increased. The most common comorbid conditions for cases <2 years of age were prematurity (13%), neurologic conditions (4%), asthma/reactive airways disease (3%), and cardiovascular disease (3%). For cases 2-18 years of age, neurologic conditions (24%), history of prematurity (14%), and asthma (21%) were most common. The most common underlying conditions for adults 18-64 years of age and older adults (≥65 years) were chronic metabolic diseases (46% and 43% respectively), cardiovascular disease (33% and 72% respectively), and chronic lung diseases (26% and 34% respectively).
Of 159 RSV cases with a known subtype, 78% (124) tested positive for RSV subtype A, 21% (30) were positive with RSV B, and 1 was positive with both RSV A and B.
Eighteen RSV-associated deaths were reported for the 2018–2019 respiratory season. The median age of fatal RSV cases was 81 years (range 4 months–98 years), and 14 cases who died had underlying medical conditions. Identification of additional RSV-associated deaths is ongoing.
- For more information see>> Reporting Q Fever
- Full issue>> Annual Summary of Communicable Diseases Reported to the Minnesota Department of Health, 2018