Avamprogetto (inglese)

Annex 2 WHA58.3

II. Is the event unusual or unexpected?

4. Is the event unusual?

THE FOLLOWING ARE EXAMPLES OF UNUSUAL EVENTS:

9 The event is caused by an unknown agent or the source, vehicle, route of transmission is

unusual or unknown.

9 Evolution of cases more severe than expected (including morbidity or case-fatality) or

with unusual symptoms.

9 Occurrence of the event itself unusual for the area, season or population.

5. Is the event unexpected from a public health perspective?

THE FOLLOWING ARE EXAMPLES OF UNEXPECTED EVENTS:

9 Event caused by a disease/agent that had already been eliminated or eradicated from the

State Party or not previously reported.

IS THE EVENT UNUSUAL OR UNEXPECTED? Answer “yes” if you have answered “yes” to questions 4 or 5 above.

III. Is there a significant risk of international spread?

6. Is there evidence of an epidemiological link to similar events in other States?

7. Is there any factor that should alert us to the potential for cross border movement of the agent, vehicle or host?

THE FOLLOWING ARE EXAMPLES OF CIRCUMSTANCES THAT MAY PREDISPOSE TO INTERNATIONAL SPREAD:

9 Where there is evidence of local spread, an index case (or other linked cases) with a

history within the previous month of:

– international travel (or time equivalent to the incubation period if the pathogen is known)

– participation in an international gathering (pilgrimage, sports event, conference, etc.)

– close contact with an international traveller or a highly mobile population.

9 Event caused by an environmental contamination that has the potential to spread across

international borders.

9 Event in an area of intense international traffic with limited capacity for sanitary control

or environmental detection or decontamination.

IS THERE A SIGNIFICANT RISK OF INTERNATIONAL SPREAD? Answer “yes” if you have answered “yes” to questions 6 or 7 above.