The Health Ministry says that a second Israeli in recent days has been diagnosed with dengue fever, but stresses that he was infected abroad, with no connection to the other Israeli who has tested positive.
The new case is found in someone who returned in mid-September from Thailand, the ministry says.
The ministry says it will carry out extermination efforts near the residence of the person in question, but did not specify where they live.
Last week, a man who returned recently from Mexico was found to be positive for the virus.
Dengue fever cannot be transferred via human contact, but if a mosquito bites someone infected with the disease, the mosquito can pass it on to another human.