PLEA Network

4 April 2017, Climate News Network, Brazil monkey deaths signal spread of viruses. Climate change and deforestation in Brazil help mosquitoes spread viruses to humans and endangered species of monkeys. Scientists in Brazil believe that global warming and climate change have created conditions that favour the reproduction of the mosquitoes that transmit viruses such as yellow fever, now spreading through previously immune regions of Brazil. The Intergovernmental Panel on Climate Change suggests that an increase of 4°C in mean annual temperatures is possible in these south and central regions because of warming caused by carbon dioxide concentrations. The yellow fever virus can be transmitted to humans and to monkeys, and thousands of monkeys − some from endangered species − have died in the last four months. Most of the deaths have been caused by the virus, but some monkeys have been shot or clubbed to death by Brazilians who erroneously believe that they, and not the mosquitoes, are responsible for transmitting the virus to humans. The woolly spider monkey (muriqui), and the brown howler monkey (bugio) are the species most affected. Sérgio Lucena, a primatologist and zoology professor at the Federal University of Espírito Santo, says that, in fact, monkeys are sentinels because they die before humans. “If the virus begins to propagate in a determined area, the death of monkeys sends us a warning.” Encourage viruses Since January, the yellow fever virus has claimed nearly 2,000 human victims, 300 of them fatal, in a region of Brazil where it had been eliminated in the 1940s. The epidemic began in the state of Minas Gerais last December, and since then it has spread to the neighbouring states of Espirito Santo, Rio, São Paulo and Bahia. Vaccination campaigns are now under way. The virus, which is transmitted by the haemagogus mosquito, is normally confined to the tropical regions in the north of Brazil. Read More here