The present invention relates to a method for reducing the percentage of concomitant infections in pigs or a herd of pigs caused by pathogens other than PCV2 comprising the step administering to said pig(s) an effective amount of PCV2 antigen or an immunogenic composition comprising PCV2 antigen. It also refers to a method for improving the resistance of pigs against concomitant infections with pathogens other than PCV2, comprising the step administering to said pig(s) an effective amount of PCV2 antigen or an immunogenic composition comprising PCV2 antigen.本發明係關於一種減少豬隻或豬群由非PCV2之病原體所引起伴隨感染之百分比的方法,該方法包含將有效量之PCV2抗原或包含PCV2抗原之免疫原性組合物投與該(等)豬隻的步驟。本發明亦關於一種改善豬隻對非PCV2之病原體伴隨感染之抗性的方法,該方法包含將有效量之PCV2抗原或包含PCV2抗原的免疫原性組合物投與該(等)豬隻的步驟。(無元件符號說明)
