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Experts form the Brazilian Fiocruz Institute release Aedes aegypti mosquitoes infected with a bacteria that prevents them from spreading dengue, Zika and Chikungunya at Ilha do Governador in Rio de Janeiro, Brazil, on August 29, 2017. The mosquitoes will infect others in their species, reducing the population which transmits the diseases. / AFP PHOTO / Apu Gomes (Photo credit should read APU GOMES/AFP/Getty Images)

Experts form the Brazilian Fiocruz Institute release Aedes aegypti mosquitoes infected with a bacteria that prevents them from spreading dengue, Zika and Chikungunya at Ilha do Governador in Rio de Janeiro, Brazil, on August 29, 2017.
The mosquitoes will infect others in their species, reducing the population which transmits the diseases.   / AFP PHOTO / Apu Gomes        (Photo credit should read APU GOMES/AFP/Getty Images)

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Brazilian biologist Roberto Costa Peres releases some of 10,000 Aedes aegypti mosquitoes infected with the Wolbachia bacterium --which reduces mosquito transmitted diseases such as dengue and chikungunya by shortening adult lifespan, affect mosquito reproduction and interfere with pathogen replication-- in Tubiacanga, Ilha do Governador, Rio de Janeiro, on October 2, 2014. The mosquitoes are expected to quickly infiltrate the insect population and stop the spread of the disease. Small-scale trials have already been conducted in communities in northern Australia. AFP PHOTO/CHRISTOPHE SIMON (Photo credit should read CHRISTOPHE SIMON/AFP/Getty Images)

Brazilian biologist Roberto Costa Peres releases some of 10,000 Aedes aegypti mosquitoes infected with the Wolbachia bacterium --which reduces mosquito transmitted diseases such as dengue and chikungunya by shortening adult lifespan, affect mosquito reproduction and interfere with pathogen replication-- in Tubiacanga, Ilha do Governador, Rio de Janeiro, on October 2, 2014. The mosquitoes are expected to quickly infiltrate the insect population and stop the spread of the disease. Small-scale trials have already been conducted in communities in northern Australia.   AFP PHOTO/CHRISTOPHE SIMON        (Photo credit should read CHRISTOPHE SIMON/AFP/Getty Images)

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Brazilian biologist Roberto Costa Peres releases some of 10,000 Aedes aegypti mosquitoes infected with the Wolbachia bacterium --which reduces mosquito transmitted diseases such as dengue and chikungunya by shortening adult lifespan, affect mosquito reproduction and interfere with pathogen replication-- in Tubiacanga, Ilha do Governador, Rio de Janeiro, on October 2, 2014. The mosquitoes are expected to quickly infiltrate the insect population and stop the spread of the disease. Small-scale trials have already been conducted in communities in northern Australia. AFP PHOTO/CHRISTOPHE SIMON (Photo credit should read CHRISTOPHE SIMON/AFP/Getty Images)

Brazilian biologist Roberto Costa Peres releases some of 10,000 Aedes aegypti mosquitoes infected with the Wolbachia bacterium --which reduces mosquito transmitted diseases such as dengue and chikungunya by shortening adult lifespan, affect mosquito reproduction and interfere with pathogen replication-- in Tubiacanga, Ilha do Governador, Rio de Janeiro, on October 2, 2014. The mosquitoes are expected to quickly infiltrate the insect population and stop the spread of the disease. Small-scale trials have already been conducted in communities in northern Australia.   AFP PHOTO/CHRISTOPHE SIMON        (Photo credit should read CHRISTOPHE SIMON/AFP/Getty Images)

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Experts form the Brazilian Fiocruz Institute release Aedes aegypti mosquitoes infected with a bacteria that prevents them from spreading dengue, Zika and Chikungunya at Ilha do Governador in Rio de Janeiro, Brazil, on August 29, 2017. The mosquitoes will infect others in their species, reducing the population which transmits the diseases. / AFP PHOTO / Apu Gomes (Photo credit should read APU GOMES/AFP/Getty Images)

Experts form the Brazilian Fiocruz Institute release Aedes aegypti mosquitoes infected with a bacteria that prevents them from spreading dengue, Zika and Chikungunya at Ilha do Governador in Rio de Janeiro, Brazil, on August 29, 2017.
The mosquitoes will infect others in their species, reducing the population which transmits the diseases.   / AFP PHOTO / Apu Gomes        (Photo credit should read APU GOMES/AFP/Getty Images)

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Brazilian Fiocruz Institute in Rio spreading Aedes aegypti mosquitoes infected with a bacteria that prevents them spreading dengue, Zika and Chikungunya at Ilha do Governador in Rio de Janeiro, Brazil. The mosquitoes will infect others in their species, reducing the population able to transmit the disease, which can cause fever, nausea and rashes, and can be fatal. August 29, 2017, Rio de Janeiro Brazil. APU GOMES / AFP The mosquitoes will infect others in their species, reducing the population which transmits the diseases. / AFP PHOTO / Apu Gomes (Photo credit should read APU GOMES/AFP/Getty Images)

Brazilian Fiocruz Institute in Rio spreading Aedes aegypti mosquitoes infected with a bacteria that prevents them spreading dengue, Zika and Chikungunya at Ilha do Governador in Rio de Janeiro, Brazil. The mosquitoes will infect others in their species, reducing the population able to transmit the disease, which can cause fever, nausea and rashes, and can be fatal. August 29, 2017, Rio de Janeiro Brazil. APU GOMES / AFP
The mosquitoes will infect others in their species, reducing the population which transmits the diseases.   / AFP PHOTO / Apu Gomes        (Photo credit should read APU GOMES/AFP/Getty Images)