From September 2011 until November 2012, 31 serum
samples from German patients with clinically sus
-
pected acute Usutu virus (USUV) infections were tested
for USUV-specific antibodies. All samples tested nega
-
tive. In addition, 4,200 serum samples from healthy
blood donors from south-west Germany were collected
in January 2012 and also analysed for the presence of
specific antibodies. One sample tested positive for
USUV-IgG and -IgM. Thus, the seroprevalence of USUV
antibodies in healthy blood donors from south-west
Germany was low in January 2012
