Final Risk Analysis - Biosecurity New Zealand

SPIROCHAETES
Leptospira spp. Borrelia theileri
Borrelia burgdorferi
RICKETTSIAL AND CHLAMYDIAL ORGANISMS
Anaplasma marginale, Anaplasma centrale
and Anaplasma caudatum
Coxiella burnetii
Anaplasma phagocytophilum Haemobartonella
Chlamydophila abortus
PROTOZOAL ORGANISMS
Babesia spp. Theileria annulata
Sarcocystis hominis
INTERNAL AND EXTERNAL PARASITES
Lice Warble flies
Mange mites Internal parasites
Ticks
4.2. HAZARD IDENTIFICATIION
Organisms in the preliminary hazard list were subjected to further analysis to determine
whether they were considered potential hazards in the commodity and organisms considered
to be potential hazards were subjected to risk assessment.
4.3. RISK ASSESSMENT
Under the MAF Biosecurity New Zealand and OIE methodologies, risk assessment consists
of:
a) Entry assessment - the likelihood of the organism being imported in
commodity.
b) Exposure assessment - the likelihood of animals or humans in New Zealand being
exposed to the potential hazard.
c) Consequence assessment - the consequences of entry, exposure, establishment or spread
of the organism.
d) Risk estimation - a conclusion on the risk posed by the organism based on the
release, exposure and consequence assessments.
If the risk estimate is non-negligible, then the organism is
classified as a hazard.
It is important to understand that not all of the above steps may be necessary in all risk
assessments. The MAF Biosecurity New Zealand and OIE methodologies makes it clear that
if the likelihood of entry is negligible for a potential hazard, then the risk estimate is
automatically negligible and the remaining steps of the risk assessment need not be carried
out. The same situation arises where the likelihood of entry is non-negligible but the exposure
MAF Biosecurity New Zealand Import Risk Analysis: Cattle from Australia, Canada, the EU & the USA ● 11