Table 2. Summary of the molecular biological and histopathologic results of vespertilionid bats found positive for orthoreoviruses.
Bat | Bat species/age and sex | Virus strain | Origin of bat | Positive organs | Virus load* | Pathological changes | Auto-lysis |
E342/08 | P. auritus Subadult/m | T3/Bat/Germany/342/08 | Bavaria | Intestine | 2.4*104 | Lung: non-suppurative interstitial pneumonia (++);intestine: hemorrhagic enteritis (+++) | − |
E019/09 | M. mystacinus Juvenile/f | Bat MRV 019/09 | Bavaria | Intestine | 1.0*103 | Lung: non-suppurative interstitial pneumonia (+) | − |
E021/09 | M. mystacinus Juvenile/f | Bat MRV 021/09 | Bavaria | Intestine | 1.3*104 | Lung: non-suppurative interstitial pneumonia (+) | − |
E022/09 | M. mystacinus Juvenile/f | Bat MRV 021/09 | Bavaria | Intestine Lung | 1.0*103 8.7*104 | Lung: non-suppurative interstitial pneumonia (+++);spleen: follicular hyperplasia (+); intestine:coccidiosis (+++) | + |
E099/09 | P. pipistrellus Adult/m | Bat MRV 021/09 | Bavaria | Liver Heart Brain | 1.3*103 3.5*103 2.4*104 | Lung: alveolar edema (++) | − |
E121/09 | P. nathusii Subadult/m | Bat MRV 021/09 | Bavaria | Intestine Liver | 1.0*103 2.4*104 | Lung: alveolar edema (+++), non-suppurative interstitial pneumonia (+), leucocytostasis of blood vessels(+++);spleen: follicular hyperplasia (+++); kidney: glomerulopathy(+++) | − |
E126/09 | P. kuhlii Adult/m | Bat MRV 021/09 | Bavaria | Intestine | 1.9*103 | Lung: non-suppurative interstitial pneumonia (++) | + |
E131/09 | N. noctula Adult/f | Bat MRV 021/09 | Bavaria | Intestine | 1.0*103 | Spleen: follicular hyperplasia (++); intestine: catarrhal-hemorrhagic enteritis (++); enteritis (+) | ++ |
m, male; f, female; −, none; +, mild; ++, moderate; +++, severe (degree of severity);
per ml of homogenized organ tissue (average size of tissue piece 8 mm3).