Comment on

• Severity of pneumonia due to new H1N1 influenza virus in ferrets is intermediate between that due to seasonal H1N1 virus and highly pathogenic avian influenza H5N1 virus.

  van den Brand JM, Stittelaar KJ, van Amerongen G, Rimmelzwaan GF, Simon J, de Wit E, Munster V, Bestebroer T, Fouchier RA, Kuiken T, Osterhaus AD. van den Brand JM, et al. J Infect Dis. 2010 Apr 1;201(7):993-9. doi: 10.1086/651132. J Infect Dis. 2010. PMID: 20187747 Free PMC article.