In Iran, the country worst-hit by the coronavirus in the Middle East, all religious gatherings, congregational prayers and communal Iftar servings remain forbidden during Ramadan. (Vahid Salemi/AP)

ISTANBUL — The Iranian cartoon shows two traditional healers, including a turbaned cleric, preparing to treat a coronavirus patient on all fours with beakers of camel urine and violet leaf oil, remedies hailed by some clergymen as surefire cures for covid-19.

On the wall hangs a picture of Iran's supreme leader, Ayatollah Ali Khamenei, donning a nurse's cap and putting a finger to his lips, signaling critics to remain silent.