CVI is Mereks vaccination
http://www.drugs.com/vet/marek-s-disease-vaccine-rispens-cvi-988-strain-fc-126-strain.html
Some states do require that the chicks be vaccinates some states dont.
I have to do a bit of digging to see if its required after a certain age in older poultry.
http://www.drugs.com/vet/marek-s-disease-vaccine-rispens-cvi-988-strain-fc-126-strain.html
Some states do require that the chicks be vaccinates some states dont.
I have to do a bit of digging to see if its required after a certain age in older poultry.