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Porcine epidemic diarrhea virus (PEDV) causes diarrhea in all ages of pigs with 50-100% mortality rates in neonatal piglets. In the United States, inactivated and subunit PEDV vaccines for pregnant sows are available, but fail to induce sufficient protection in neonatal piglets farrowed from PEDV naïve sows. A safe and efficacious live attenuated vaccine that can prime mucosal immune responses is urgently needed. In this study, we evaluated the safety and efficacy of two attenuated PEDV vaccine candidates, the emerging non-S INDEL PEDV strain PC22A at the 100th cell culture passage level - Clone no. 4 (P100C4) and at the 120th passage level (P120), in weaned pigs.
Pubmed ID: 30634958
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Cell line Vero is a Spontaneously immortalized cell line with a species of origin Chlorocebus sabaeus
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