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. 2018 Feb 6;18:220. doi: 10.1186/s12889-018-5062-0

Table 1.

Yersinia pestis reservoir circulation surveillance in 2014 (source: National Institute of Health of Peru and GERESA La Libertad)

Y. pestis reservoir surveillance in Santa Clara and Los Colonos, Casagrande
X. cheopis Specific Index ( c )
Location Num. traps Captured rodents Trap Index (a) General Flea Index (b) R. rattus R. norvegicus Y. pestis results
Los Colonos 60 17 14,17% 6,59 11,8 0,5 Not available
Santa Clara 60 12 10,00% 0,20 0 0,11 POSITIVE

(Note: No data was available for San José Alto but the human cases where located there)

(a) Defined as the number of traps with rats divided by the total number of traps deployed, multiplied by 100. [50]

(b) Defined as the number of fleas collected divided by the total number of rodents captured. [50]

(c) Defined as the number of fleas of one specific species divided by the total number of rodents of one specific species. If the Specific Index (SI) is > 1 regarding Xenopsilla cheopis, the situation is considered at risk. [50]