Ventilation and laboratory confirmed acute respiratory infection (ARI) rates in college residence halls in College Park, Maryland.

Finally, our finding of a strong trend toward increased ARI incidence associated with ventilation rates of less than 5 L/(s person) suggests that very low outdoor air supply rates may be impacting ARI, either by promoting transmission via bioaerosols within the building or by altering host susceptibility to infection. 4.1.

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There was a trend toward lower rates of influenza vaccination among HVB residents compared with those in the LVB, but it did not reach statistical significance during the experimental period.

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