Viable Newcastle disease vaccine strains in a pharmaceutical dump.
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Amendola A, et al. Among authors: zappa a.
Emerg Infect Dis. 2007 Dec;13(12):1901-3. doi: 10.3201/eid1312.070715.
Emerg Infect Dis. 2007.
PMID: 18258042
Free PMC article.