Brazil looks to short-term and long-term strategies to fight a disease so painful it's known as "breakbone fever." The outbreak is part of a global wave of dengue triggered in part by climate change.
Scientists say gene-editing technology may eradicate a mosquito in the U.S. that spreads dengue and other diseases. Concerns remain about the possible environmental impact of bioengineered mosquitoes.
The number of patients is soaring, the health system is stressed and the government is facing criticism over its response. So far 150,000 Peruvians have caught the virus this year and 248 have died.
