Publications by authors named "Nancy-Diamella Moukodoum"

Article Synopsis
  • The study aimed to assess how often asymptomatic infections of Anaplasma spp. and Ehrlichia spp. occur in children in southeastern Gabon.
  • A total of 452 blood samples were collected from school-aged children, revealing that 57.5% were positive for Anaplasma spp. and/or Ehrlichia spp. via microscopy, while a higher sensitivity of 86.9% was noted with PCR testing for Anaplasma spp.
  • The findings indicate a significant prevalence of Anaplasma spp. infections, suggesting a need for further research on various species, their impact on health, and how they spread.
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Article Synopsis
  • * It finds that antibiotic treatment in humans and non-human primates (NHPs) correlates with a higher prevalence of MRSA compared to wild species like micromammals and bats, indicating that antibiotic pressure influences resistance acquisition.
  • * The research suggests that generalist MRSA strains, those that can infect various hosts, have a higher potential for spreading antibiotic resistance than specialist strains, highlighting the importance of host diversity in the dynamics of antibiotic resistance in ecosystems.
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Malaria parasites infect a wide range of vertebrate hosts, such as reptiles, birds and mammals (i.e., primates, ungulates, bats, and rodents).

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Plasmodium falciparum, the most virulent agent of human malaria, shares a recent common ancestor with the gorilla parasite Plasmodium praefalciparum. Little is known about the other gorilla- and chimpanzee-infecting species in the same (Laverania) subgenus as P. falciparum, but none of them are capable of establishing repeated infection and transmission in humans.

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Recent studies have highlighted the large diversity of malaria parasites infecting African great apes (subgenus Laverania) and their strong host specificity. Although the existence of genetic incompatibilities preventing the cross-species transfer may explain host specificity, the existence of vectors with a high preference for a determined host represents another possibility. To test this hypothesis, we undertook a 15-mo-long longitudinal entomological survey in two forest regions of Gabon, where wild apes live, at different heights under the canopy.

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Re-examination, using molecular tools, of the diversity of haemosporidian parasites (among which the agents of human malaria are the best known) has generally led to rearrangements of traditional classifications. In this study, we explored the diversity of haemosporidian parasites infecting vertebrate species (particularly mammals, birds and reptiles) living in the forests of Gabon (Central Africa), by analyzing a collection of 492 bushmeat samples. We found that samples from five mammalian species (four duiker and one pangolin species), one bird and one turtle species were infected by haemosporidian parasites.

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Article Synopsis
  • This study investigates the population genetics of Plasmodium falciparum in the Baka Pygmies of Gabon, comparing it to nearby Bantu farming communities.
  • A total of 342 blood samples were analyzed to assess the prevalence and genetic structure of the malaria parasite, finding a similar infection rate of about 57% in both groups.
  • While no major differences in genetic structure were found between Pygmies and Bantus, one gene showed evidence of unique evolutionary influences, suggesting that local human and mosquito interactions may affect parasite dynamics.
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African great apes are naturally infected by a multitude of Plasmodium species most of them recently discovered, among which several are closely related to human malaria agents. However, it is still unknown whether these animals can serve as source of infections for humans living in their vicinity. To evaluate this possibility, we analysed the nature of Plasmodium infections from a bank of 4281 human blood samples collected in 210 villages of Gabon, Central Africa.

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Background: Until 2009, the Laverania subgenus counted only two representatives: Plasmodium falciparum and Plasmodium reichenowi. The recent development of non-invasive methods allowed re-exploration of plasmodial diversity in African apes. Although a large number of great ape populations have now been studied regarding Plasmodium infections in Africa, there are still vast areas of their distribution that remained unexplored.

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