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27 December 2021 Current Situation of Malaria and Resistance of Main Vectors to WHO Recommended Insecticides in an Endemic Area, Southeastern Iran
Nasrollah Saberi, Ahmad Raeisi, Mohammad Amin Gorouhi, Hassan Vatandoost, Minoo Mashayekhi, Fatemeh Nikpour, Faramarz Bozorg Omid, Abbas Rahimi Foroushani, Ahmad Ali Hanafi-Bojd
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Abstract

Although malaria is endemic in some areas of southeastern Iran, following the successful national malaria elimination plan, the local transmission area has been shrunk. The main cases in Iran are due to Plasmodium vivax followed by P. falciparum. This study was aimed to determine the current situation of malaria in Kerman Province of Iran and evaluate the insecticide resistance of main vectors. The field study was conducted in 2019. Data of new malaria cases were obtained from the health centers for the period of 2009–2018. Susceptibility status of Anopheles stephensi and An. dthali was evaluated against dichlorodiphenyltrichloroethane, Dieldrin, Malathion, Bendiocarb, Deltamethrin, and Temephos at the diagnostic dose. A total of 522 malaria cases were recorded and divided into indigenous (33.14%) and imported (66.86%) categories. The highest incidence of the disease was reported from the southern areas of the province, where all indigenous cases occurred. Adults of An. stephensi were resistant to dichlorodiphenyltrichloroethane while its resistance to be confirmed to dieldrin, bendiocarb and deltamethrin. As An. dthali had less than 98% mortality against bendiocarb, the resistance status should be confirmed with more tests. Our findings showed both species had less than 98% mortality against bendiocarb and deltamethrin insecticides which are used in malaria vector control program in Iran. Due to the susceptibility of these vectors to temephos, larviciding can be advised for vector control in this area.

© The Author(s) 2021. Published by Oxford University Press on behalf of Entomological Society of America. All rights reserved. For permissions, please e-mail: journals.permissions@oup.com.
Nasrollah Saberi, Ahmad Raeisi, Mohammad Amin Gorouhi, Hassan Vatandoost, Minoo Mashayekhi, Fatemeh Nikpour, Faramarz Bozorg Omid, Abbas Rahimi Foroushani, and Ahmad Ali Hanafi-Bojd "Current Situation of Malaria and Resistance of Main Vectors to WHO Recommended Insecticides in an Endemic Area, Southeastern Iran," Journal of Medical Entomology 59(2), 607-614, (27 December 2021). https://doi.org/10.1093/jme/tjab214
Received: 9 September 2021; Accepted: 24 November 2021; Published: 27 December 2021
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KEYWORDS
Anopheles dthali
Anopheles stephensi
insecticide resistance
malaria
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