1.Criteria for the decision to apply protective vaccination(1) U.K.
| Criteria | Decision | |
|---|---|---|
| For vaccination | Against vaccination | |
| Population density of susceptible animals | High | Low |
| Predominant species clinically affected | pigs | ruminants |
| Movement of potentially infected animals or products out of the protection zone | Evidence | No evidence |
| Predicted airborne spread of virus from infected holdings | High | Low or absent |
| Suitable vaccine | Available | Not available |
| Origin of outbreaks (traceability) | Unknown | Known |
| Incidence slope of outbreaks | Rising rapidly | Shallow or slow rise |
| Distribution of outbreaks | Widespread | Restricted |
| Public reaction to total stamping out policy | Strong | Weak |
| Acceptance of regionalisation after vaccination | Yes | No |
(1)
in accordance with the report of the Scientific Committee on Animal Health 1999