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Table 1 Sera used in the present study

From: Correlation between the presence of neutralizing antibodies against porcine circovirus 2 (PCV2) and protection against replication of the virus and development of PCV2-associated disease

    Number of pigs with
Origin of pigs PCV2-infection Serum samples available high* PCV2-replication clinical signs of PMWS
Gnotobiotic experimental 0, 10, 15, 21 DPI 1/8 0/8
SPF conventional experimental 0, 7, 10, 14, 21 DPI 4/10 4/10
Field cases (Belgium) natural 4, 6, 8, 10, 12, 14 weeks of age NA** 2/10
Field cases (Denmark) natural 0, 3, 6, 9 weeks after mingling NA** 13/26
  1. high*: = 104.3 TCID50/gram lymph node
  2. NA**: not available since PCV2-titres were not obtained from healthy pigs. All PMWS-affected pigs did contain high titres of PCV2