The city of Nogales, Sonora, Mexico, just south of the Arizona border, is spraying for mosquitoes to try to prevent dengue.
The city is hoping to prevent cases after a high number of infections last year.
The city health office said it is prioritizing high tourism areas in the city center in order to prevent the spread of the mosquito-borne illness in and outside of the city, which sees a high rate of people crossing back and forth from Arizona every day.
Nogales, Sonora, health officials are encouraging people to prevent buildups of water — where mosquitos breed — ahead of the rainy season this summer.
Symptoms of dengue include fever, headache and muscle and joint pain.
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