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Atlantic forest

NOT Open Access | Residual malaria of Atlantic Forest systems and the influence of anopheline fauna

July 20, 2021 - 15:15 -- NOT Open Access
Ferreira LM, Rezende HR, Buery JC, da Silva LS, Figueiredo TCC, Fux B, de Castro Duarte AMR, Cerutti Junior C
Parasitol Res. 2021 Jul 17

In Brazil, the Amazon region comprises 99.5% of the reported malaria cases. However, another hotspot of the disease is the Atlantic Forest regions, with the sporadic occurrence of autochthonous human cases. In such context, this study sought to investigate the role of anopheline mosquitoes (Diptera: Culicidae) in the residual malaria transmission in Atlantic Forest areas.

NOT Open Access | Loss of forest cover and host functional diversity increases prevalence of avian malaria parasites in the Atlantic Forest

March 17, 2021 - 17:12 -- NOT Open Access
Fecchio A, Lima MR, De La Torre GM, et al.
Int J Parasitol. 2021 Mar 12:S0020-7519(21)00093-X

Host phylogenetic relatedness and ecological similarity are thought to contribute to parasite community assembly and infection rates. However, recent landscape level anthropogenic changes may disrupt host-parasite systems by impacting functional and phylogenetic diversity of host communities. We examined whether changes in host functional and phylogenetic diversity, forest cover, and minimum temperature influence the prevalence, diversity, and distributions of avian haemosporidian parasites (genera Haemoproteus and Plasmodium) across 18 avian communities in the Atlantic Forest.

A mathematical model for zoonotic transmission of malaria in the Atlantic Forest: Exploring the effects of variations in vector abundance and acrodendrophily

February 17, 2021 - 09:23 -- Open Access
Medeiros-Sousa AR, Laporta GZ, Coutinho RM, Mucci LF, Marrelli MT
PLoS Negl Trop Dis. 2021 Feb 16;15(2):e0008736

Transmission foci of autochthonous malaria caused by Plasmodium vivax-like parasites have frequently been reported in the Atlantic Forest in Southeastern and Southern Brazil. Evidence suggests that malaria is a zoonosis in these areas as human infections by simian Plasmodium species have been detected, and the main vector of malaria in the Atlantic Forest, Anopheles (Kerteszia) cruzii, can blood feed on human and simian hosts.

Avian Malaria and Related Parasites from Resident and Migratory Birds in the Brazilian Atlantic Forest, with Description of a New Haemoproteus Species

January 27, 2021 - 10:34 -- Open Access
Anjos CC, Chagas CRF, Kirchgatter K, et al.
Pathogens. 2021 Jan 21;10(2):103

Determining the prevalence and local transmission dynamics of parasitic organisms are necessary to understand the ability of parasites to persist in host populations and disperse across regions, yet local transmission dynamics, diversity, and distribution of haemosporidian parasites remain poorly understood. We studied the prevalence, diversity, and distributions of avian haemosporidian parasites of the genera Plasmodium, Haemoproteus, and Leucocytozoon among resident and migratory birds in Serra do Mar, Brazil.

Atlantic Forest Malaria: A Review of More than 20 Years of Epidemiological Investigation

January 13, 2021 - 11:33 -- Open Access
Buery JC, de Alencar FEC, Duarte AMRC, Loss AC, Vicente CR, Ferreira LM, Fux B, Medeiros MM, Cravo P, Arez AP, Cerutti Junior C
Microorganisms. 2021 Jan 8;9(1):E132

In the south and southeast regions of Brazil, cases of malaria occur outside the endemic Amazon region near the Atlantic Forest in some coastal states, where Plasmodium vivax is the recognized parasite. Characteristics of cases and vectors, especially Anopheles (Kerteszia) cruzii, raise the hypothesis of a zoonosis with simians as reservoirs. The present review aims to report on investigations of the disease over a 23-year period. Two main sources have provided epidemiological data: the behavior of Anopheles vectors and the genetic and immunological aspects of Plasmodium spp. obtained from humans, Alouatta simians, and Anopheles spp. mosquitoes.

NOT Open Access | Kerteszia cruzii and extra-Amazonian malaria in Brazil: Challenges due to climate change in the Atlantic Forest

July 16, 2020 - 07:56 -- NOT Open Access
de Azevedo TS, Lorenz C, Chiaravalloti-Neto F, Sallum MAM
Infect Genet Evol. 2020 Jul 12:104456

Kerteszia cruzii is a sylvatic mosquito and the primary vector of Plasmodium spp., which can cause malaria in humans in areas outside the Amazon River basin in Brazil. Anthropic changes in the natural environments are the major drivers of massive deforestation and local climate change, with serious impacts on the dynamics of mosquito communities and on the risk of acquiring malaria.

Extensive genetic diversity of Plasmodium vivax dbp-II in Rio de Janeiro Atlantic Forest and Brazilian Amazon Basin: evidence of positive selection

February 25, 2020 - 15:53 -- Open Access
Natália Ketrin Almeida-de-Oliveira, Lidiane Lima-Cury, Maria de Fátima Ferreira-da-Cruz, et al.
Malaria Journal 2020 19:81, 19 February 2020

Plasmodium vivax is the most widespread human malaria parasite outside Africa and is the predominant parasite in the Americas. Increasing reports of P. vivax disease severity, together with the emergence of drug-resistant strains, underscore the urgency of the development of vaccines against P. vivax. Polymorphisms on DBP-II-gene could act as an immune evasion mechanism and, consequently, limited the vaccine efficacy. This study aimed to investigate the pvdbp-II genetic diversity in two Brazilian regions with different epidemiological patterns: the unstable transmission area in the Atlantic Forest (AF) of Rio de Janeiro and; the fixed malaria-endemic area in Brazilian Amazon (BA).

Howler monkeys are the reservoir of malarial parasites causing zoonotic infections in the Atlantic forest of Rio de Janeiro

December 16, 2019 - 16:24 -- Open Access
Abreu FVS, Santos ED, Lourenço-de-Oliveira R, et al.
PLoS Negl Trop Dis. 2019 Dec 9; 13(12):e0007906.

Although malaria cases have substantially decreased in Southeast Brazil, a significant increase in the number of Plasmodium vivax-like autochthonous human cases has been reported in remote areas of the Atlantic Forest in the past few decades in Rio de Janeiro (RJ) state, including an outbreak during 2015–2016. The singular clinical and epidemiological aspects in several human cases, and collectively with molecular and genetic data, revealed that they were due to the non-human primate (NHP) parasite Plasmodium simium; however, the understanding of the autochthonous malarial epidemiology in Southeast Brazil can only be acquired by assessing the circulation of NHP Plasmodium in the foci and determining its hosts.

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