Article History

First Online: 1 September 2015

Change Date: 18 January 2016

Change Type: Correction

Change Details: <i>In the original article, some descriptions of the properties of viruses in Tables 1 and 2 were inaccurate; the tables have been updated to reflect this. Also, on page 656, Newcastle Disease Virus (NDV) was accidentally described as a double-stranded RNA virus. NDV is a single-stranded RNA virus. The authors would like to acknowledge R. C. Hoeben and B. G. van den Hoogen for alerting them to these errors.</i>

Competing interests

: H.L.K. serves as a consultant for Amgen and has received honoraria. The other authors have no competing interests to disclose.