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California
Los Angeles County
1
Norway rat
1
Rattus norvegicus
1
Spermophilus beecheyi
1
Xenopsylla cheopis
1
Yersinia pestis
1
disease
1
domestic pet
1
endemic
1
epizootics
1
ground squirrel
1
history
incidence
1
oriental rat flea
1
plague
1
plague detection
1
public health
1
serology
1
surveillance
1
wild carnivore
1
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