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Table 1 Study design with vaccination and challenge statuses of PRRSV

From: Vaccination of sows against type 2 Porcine Reproductive and Respiratory Syndrome Virus (PRRSV) before artificial insemination protects against type 2 PRRSV challenge but does not protect against type 1 PRRSV challenge in late gestation

Group ( n)a Vaccination Challenge
Type 1 PRRSV Type 2 PRRSV
1 (5) O O X
2 (5) O X O
3 (5) X O X
4 (5) X X O
5 (3) O X X
6 (3) X X X
  1. an, number of sows in group.