Predicting High Risk for Human Hantavirus Infections, Sweden
Gert E. Olsson , Marika Hjertqvist, Åke Lundkvist, and Birger Hörnfeldt
Author affiliations: Swedish Institute for Infectious Disease Control, Solna, Sweden (G.E. Olsson M. Hjertqvist, Å. Lundkvist); Swedish University of Agricultural Sciences, Umeå, Sweden (G.E. Olsson); Swedish Defence Research Agency, Umeå (G.E. Olsson); Karolinska Institutet, Stockholm, Sweden (Å. Lundkvist); Umeå University, Umeå (B. Hörnfeldt)
Figure 2. Linear regressions of incidence of human cases of hemorrhagic fever with renal syndrome in Sweden per 12-month period (July–June) from 1989 through 2007, based on fall bank vole trapping indexes from late September of the concurrent season (p< 0.001). *Because trapping indices are proportions, the arcsine transformation was used.
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