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Table 2 TBEV modified indirect ELISA (mE) S/P % value of all bulk tank milk samples collected in May and November

From: Mapping geographical areas at risk for tick-borne encephalitis (TBE) by analysing bulk tank milk from Swedish dairy cattle herds for the presence of TBE virus–specific antibodies

S/P % values

Number of bulk tank milk samples/herds

May

November

< 12

570

490

12–19

28

43

≥ 20

18

27

Total number of herds

616

560

  1. Samples were analysed in modified indirect ELISA (mE)
  2. S/P % values of < 12 are considered negative, S/P % values of 12–19 doubtful, and ≥ 20 positive, for the presence of antibodies