A new study in the U.S. has shown that pigs vaccinated against one strain of influenza were worse off if subsequently infected by a related strain of the virus.
http://m.medicalxpress.com/news/2013-08-vaccination-flu-worse-exposed-strain.html
Toms Blog on Life and Livingness
A new study in the U.S. has shown that pigs vaccinated against one strain of influenza were worse off if subsequently infected by a related strain of the virus.
http://m.medicalxpress.com/news/2013-08-vaccination-flu-worse-exposed-strain.html