| One uses the vaccinia virus, a relatively harmless virus used in smallpox vaccines, and the second uses the fowlpox vaccine. |
| In October of 1997, four separate cases of fowlpox occurred within a three week period in the Mission area, all in backyard poultry. |
| The invention further relates to eukaryote cells or prokaryote cells containing the recombinant DNA vector or the recombinant fowlpox virus. |
| This serious limitation is not observed with canarypox or fowlpox vectors but applies to BCG, poliovirus, or human adenovirus. |
| A new form of fowlpox, he said, now threatens poultry production and requires a new vaccine strategy. |
| With a view to improve current fowlpox virus vaccine, we have removed the REV sequences from the fowlpox virus genome. |
