Female Anopheles mosquitoes marked with fluorescent powder under the microscope in the field laboratory in Príncipe on July 11, 2023. Malaria is caused by plasmodium parasite which is transmitted in humans through the bite of an infected female Anopheles mosquito.
Laboratory technician Janete Marbel Viegas, 25, inspects dead mosquitoes under the mobile phone flashlight in the laboratory at the University of São Tomé and Príncipe (USTP) on July 10, 2023.
Laboratory technician Janete Marbel Viegas places containers with water inside mosquito cages for egg collection in the laboratory at the University of São Tomé and Príncipe (USTP) on July 10, 2023.
Laboratory technician Janete Marbel Viegas, 25, adds ground fish food to mosquito larvae to feed on in the laboratory at the University of São Tomé and Príncipe (USTP) on July 10, 2023.
Laboratory staff at the new molecular biology research laboratory located on the campus of the University of São Tomé and Príncipe (USTP) on July 10, 2023.
Laboratory staff Janete Marbel Viegas, 25, (left) and Gustavo Oliveira Cotta Rocha, 32, (right) work in the new molecular biology research laboratory located on the campus of the University of São Tomé and Príncipe (USTP) on July 10, 2023.
Ivan Mugeni Mulongo, 29, insectary technician for the University of California Malaria Initiative, sampling mosquitos using an aspirator in Príncipe on July 11, 2023.
Ivan Mugeni Mulongo, 29, insectary technician for the University of California Malaria Initiative, sampling mosquitos using an aspirator in Príncipe on July 11, 2023.
Maria Júlia Corrêa, 27, assistant field entomologist for the University of California Malaria Initiative, places cups with mosquitos inside the cage in the field laboratory in Príncipe on July 11, 2023.
University of California Malaria Initiative Field team Ivan Mugeni Mulongo and Maria Júlia Corrêa sampling mosquitos using an aspirator in Príncipe on July 11, 2023.
Collection cup with mosquitos at the University of California Malaria Initiative site on the island of Príncipe on July 11, 2023.
Dr. Anthony Cornel (left), who leads field studies of mosquito ecology on the island of Príncipe, places cotton wool inside the collection cup for the volunteer mosquito collector São Joaqim (right) on July 11, 2023.
Dr.João Pinto (left), who leads the University of California Malaria Initiative (UCMI) field studies of mosquito ecology and biology on the island of Príncipe, gives collection cups to the volunteer mosquito collector Nilton Pontes in Príncipe on July 11, 2023.
Mosquito collector Valter Fernandes (center) receives collection cups and other equipment to catch mosquitoes from the University of California Malaria Initiative (UCMI) field team in Príncipe on July 11, 2023.
A boy climbs a coconut tree to collect coconuts in Príncipe on July 12, 2023.
Dr. Anthony "Anton" Cornel, who leads the University of California Malaria Initiative (UCMI) field studies of mosquito ecology on the island of Príncipe, looks for mosquito larvae in the shallow puddles on July 11, 2023.
The road through the dense jungle on the island of Príncipe on July 11, 2023. Around half of the island is designated as a natural park and a home for various forms of wildlife.
Dr. Anthony "Anton" Cornel, who leads the University of California Malaria Initiative (UCMI) field studies of mosquito ecology on the island of Príncipe, looks for mosquito larvae in the shallow puddles on July 11, 2023.
The University of California Malaria Initiative lead field entomologist Dr. Anton Cornel samples mosquitos using an aspirator in Príncipe on July 11, 2023.
Dr. Anthony Cornel looks at the Anopheles mosquitos marked with fluorescent powder under the microscope in the field laboratory in Príncipe on July 11, 2023.
Anopheles mosquitoes marked with fluorescent powder under the microscope in the field laboratory in Príncipe on July 11, 2023.
Ivan Mugeni Mulongo, 29, insectary technician for the University of California Malaria Initiative, brings the mosquito cage outside to be marked with fluorescent powder before the release at sunset in Príncipe on July 11, 2023.
Ivan Mugeni Mulongo, 29, insectary technician for the University of California Malaria Initiative, brings the mosquito cage outside to be marked with fluorescent powder before the release at sunset in Príncipe on July 11, 2023.
The University of California Malaria Initiative lead field entomologist Dr. Anton Cornel marks mosquitos using fluorescent powder before the release at sunset in Príncipe on July 11, 2023.
The University of California Malaria Initiative lead field entomologist Dr. Anton Cornel marks mosquitos using fluorescent powder before the release at sunset in Príncipe on July 11, 2023.
Local scientists carry cages with wild-typed marked mosquitoes to be released at dusk in central park as part of the “Mark, Release and Recapture” Studies in partnership with The University of California Malaria Initiative in Príncipe on July 11, 2023. The purpose of the small-scale release is to collect scientific data on the longevity and dispersal of the released mosquitoes.
Local scientists carry cages with wild-typed marked mosquitoes to be released at dusk in central park as part of the “Mark, Release and Recapture” Studies in partnership with The University of California Malaria Initiative in Príncipe on July 11, 2023. The purpose of the small-scale release is to collect scientific data on the longevity and dispersal of the released mosquitoes.
Local scientists release wild-typed marked mosquitoes as part of the “Mark, Release, and Recapture” Studies in partnership with the University of California Malaria Initiative (UCMI) in central park in Príncipe on July 11, 2023. The purpose of the small-scale release is to collect scientific data on the longevity and dispersal of the released mosquitoes.
The University of California Malaria Initiative field team is driving at night to meet with the mosquito collectors in Príncipe on July 12, 2023.
The University of California Malaria Initiative field team arrives to meet the mosquito collector at his home in Príncipe on July 12, 2023.
The University of California Malaria Initiative field entomologist Dr. João Pinto meets with the first nighttime mosquito collector in Nova Estrela, a village in the eastern part of Príncipe on July 12, 2023.
Gecinildo Dilo, the first-time mosquito collector, sits outdoors to catch mosquitoes using his torch and aspirator as they attempt to feed on his exposed lower legs and feet in Príncipe on July 12, 2023.
Gecinildo Dilo, the first-time mosquito collector in Nova Estrela, a village in the eastern part of Príncipe on July 12, 2023. Collectors, using a torch and an aspirator, catch mosquitoes as they attempt to feed on their exposed lower legs and feet.
Dr. Gregory Lanzaro who leads the University of California Malaria Initiative field trials checks for mosquitoes inside the night collectors cup in Príncipe on July 12, 2023.
Gael Afonso, the first-time mosquito collector, uses a torch and an aspirator to catch mosquitoes as they attempt to feed on his exposed lower legs and feet Príncipe on July 12, 2023.
Pristine rainforests with rich and unique biodiversity cover the mountain peaks of the volcanic island of Príncipe on July 11, 2023.
Traditional wooden house on stilts surrounded by the dense jungle on the island of Príncipe on July 11, 2023.
Children pick guava fruits on the island of Príncipe on July 11, 2023.
Children play skipping rope on the island of Príncipe on July 11, 2023.
Children play skipping rope on the island of Príncipe on July 11, 2023.
The road through the mountains and rainforests on the island of Príncipe on July 11, 2023.
Fashion boutique in Santo António, the capital of Príncipe, on July 11, 2023.
A child stands on the bank of the river Papagaio in Santo Antonio, Príncipe on July 11, 2023.
Life on the quiet streets of Santo Antonio, the capital city of Príncipe on July 11, 2023.
The residents of Santo Antonio, the capital city of Príncipe, on July 11, 2023.
Kids paint the sap from the rubber tree on a plantain leaf to make a football in Príncipe on July 12, 2023.
A kid paints the sap from the rubber tree on a plantain leaf to make a football in Príncipe on July 12, 2023.
Kids use the sap from the rubber tree on a plantain leaf to make a football in Príncipe on July 12, 2023.
Kids play football on the island of Príncipe on July 12, 2023.
Fishermen in a small fishing village on the island of Príncipe on July 12, 2023.
Fishing hooks lined on the wood plank on the island of Príncipe on July 12, 2023.
Traditional wooden houses in one of the fishing villages on the island of Príncipe on July 12, 2023.
Fishermen community in Santo Antonio, the capital city of Príncipe, on July 12, 2023.
Traditional wooden houses on stilts on the beach in the fishing village on the island of Príncipe on July 12, 2023.
Woman on the patio of her wooden house on stilts in the fishing village on the island of Príncipe on July 12, 2023.
Príncipe is a Unisco Biosphere Reserve due to the diverse range of endemic plants, birds, insects, and marine species, July 12, 2023.
Yello taxis lined up in São Tomé city, the capital of the country, on July 13, 2023.
Electricity meters on the house in São Tomé city, the capital of the country, on July 13, 2023.
Crumbling Portuguese colonial architecture in São Tomé city, the capital of the country, on July 13, 2023.
Women wash their clothes in the river, São Tomé, on July 14, 2023.
Kids jump off the abandoned rusty boat into the bay in São Tomé on July 14, 2023.
Kids jump off the abandoned rusty boat into the bay in São Tomé on July 14, 2023.
Kids climb on the abandoned rusty boat to jump into the bay in São Tomé on July 14, 2023.
A kid climbs on the abandoned rusty boat to jump into the bay in São Tomé on July 14, 2023.
Kids play on the abandoned rusty boat before jumping into the bay in São Tomé on July 14, 2023.
