Epidemiol Health.  2015;37:e2015050. 10.4178/epih/e2015050.

Tularemia and plague survey in rodents in an earthquake zone in southeastern Iran

Affiliations
  • 1Department of Virology, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran.
  • 2Department of Epidemiology, Pasteur Institute of Iran, Tehran, Iran. mostafavi@pasteur.ac.ir
  • 3National Reference Laboratory for Plague, Tularemia and Q Fever, Research Centre for Emerging and Re-emerging Infectious Diseases, Pasteur Institute of Iran, Akanlu, Kabudar Ahang, Hamadan, Iran.
  • 4Department of Bacteriology, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran.
  • 5Institute for Veterinary Medical Research, Centre for Agricultural Research, Hungarian Academy of Sciences, Budapest, Hungary.

Abstract


OBJECTIVES
Earthquakes are one the most common natural disasters that lead to increased mortality and morbidity from transmissible diseases, partially because the rodents displaced by an earthquake can lead to an increased rate of disease transmission. The aim of this study was to evaluate the prevalence of plague and tularemia in rodents in the earthquake zones in southeastern Iran.
METHODS
In April 2013, a research team was dispatched to explore the possible presence of diseases in rodents displaced by a recent earthquake magnitude 7.7 around the cities of Khash and Saravan in Sistan and Baluchestan Province. Rodents were trapped near and in the earthquake zone, in a location where an outbreak of tularemia was reported in 2007. Rodent serums were tested for a serological survey using an enzyme-linked immunosorbent assay.
RESULTS
In the 13 areas that were studied, nine rodents were caught over a total of 200 trap-days. Forty-eight fleas and 10 ticks were obtained from the rodents. The ticks were from the Hyalomma genus and the fleas were from the Xenopsylla genus. All the trapped rodents were Tatera indica. Serological results were negative for plague, but the serum agglutination test was positive for tularemia in one of the rodents. Tatera indica has never been previously documented to be involved in the transmission of tularemia.
CONCLUSIONS
No evidence of the plague cycle was found in the rodents of the area, but evidence was found of tularemia infection in rodents, as demonstrated by a positive serological test for tularemia in one rodent.

Keyword

Plague; Tularemia; Earthquakes; Iran

MeSH Terms

Agglutination Tests
Disasters
Earthquakes*
Enzyme-Linked Immunosorbent Assay
Iran*
Mortality
Plague*
Prevalence
Rodentia*
Serologic Tests
Siphonaptera
Ticks
Tularemia*
Xenopsylla
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