Iran has seasonal mosquito activity from April through November, with peak risk in the southeast. The Sistan-Baluchestan province bordering Pakistan, the Persian Gulf coast, and southern provinces carry the highest risk. The central plateau, Tehran, and the Alborz and Zagros highlands have minimal mosquito-borne disease risk.
Malaria (P. vivax) is the primary concern, limited to the southeastern provinces near the Pakistan border. Iran has dramatically reduced malaria and is in the elimination phase. Overall risk is low for most travelers visiting central and northern Iran.
Anopheles stephensi is the primary malaria vector in the southeast. Culex species are common in urban areas. The countrys diverse geography means risk is almost entirely confined to the warm southeastern lowlands.
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Disease presence data is sourced from WHO, CDC, ECDC, and OpenDengue. This is not medical advice — consult a travel health professional before your trip.