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. 2019 Dec 12;24(50):1900051. doi: 10.2807/1560-7917.ES.2019.24.50.1900051

Table 3. Summary of results of laboratories in the external quality assesment on molecular diagnostics of emerging neurotropic viruses, Europe (n = 51) .

Sample ID 1a 2 3 4 5 6 7 8 9 10
Virus TOSV (lineage A) TOSV (lineage B) USUV WNV (lineage 1) WNV (lineage 2) TBEV Negative Negative Negative Negative
Concentration 1.57 x 105 RNA cp/0.4mL 1.24 x 105 RNA cp/0.4mL 6.34 x 103 RNA cp/0.4mL 7.2 x 104 RNA cp/0.4mL 4.96 x 105 RNA cp/0.4mL 5.06 x 104 RNA cp/0.4mL n/a n/a n/a n/a
Total correct positive when tested for the specific virus 31/51 28/51 23/51 42/51 46/51 37/51 n/a n/a n/a n/a
Total correct positive when not tested for the specific virus 17/51 18/51 19/51 2/51 2/51 8/51 n/a n/a n/a n/a
Total correct 48/51 46/51 42/51 44/51 48/51 45/51 47/51 48/51 49/51 48/51
Total partially correct: identification at the genus level 0/51 0/51 1/51 2/51 1/51 2/51 n/a n/a n/a n/a
False 4/51 5/51 5/51 5/51 2/51 4/51 3/51 3/51 1/51 3/51
Total sentivity 31/32 28/32 21/28 42/48 46/48 36/42 n/a n/a n/a n/a

n/a: not applicable; TBEV: tick-borne encephalitis virus; TOSV: Toscana virus; USUV: Usutu virus; WNV: West Nile virus.

a Number > 100% as one laboratory submitted both a correct result (positive for TOSV) and one false result (positive for TBEV) for this sample.