Detection of Adenoviruses and Astroviruses in Patients and Marine Animals in the Republic of Guinea

Détection des Adénovirus et des Astrovirus Chez les Patients et les Animaux Marins en République de Guinée

Authors

  • André Saa Togbodouno 1. Institute of Applied Biology Research of Guinea
  • Roland Tenkiano 1. Institute of Applied Biology Research of Guinea
  • Emmanuel Saa Millimono 1. Institute of Applied Biology Research of Guinea
  • René Tamba Tolno 1. Institute of Applied Biology Research of Guinea
  • Jacqueline Sia Mara 2. University of Kindia
  • Ramatoulaye Balde 1. Institute of Applied Biology Research of Guinea
  • Lansana II Soumah 1. Institute of Applied Biology Research of Guinea
  • Moussa Kolié 3. Virology Research Centre
  • Laurent Gbago Onivogui 1. Institute of Applied Biology Research of Guinea
  • Sanaba Boumbaly 4. Regional Hospital of Kindia
  • Boubacar Sidy Sily Bah 5. Prefectural Hospital of Gueckédou
  • Mohamed Sahar Traore 1. Institute of Applied Biology Research of Guinea

DOI:

https://doi.org/10.5281/zenodo.20112843

Keywords:

Adenovirus, Astrovirus, Diarrhoea, Prevalence, Guinea

Abstract

ABSTRACT
Introduction. Gastroenteritis remains a major public health concern in low-income countries. Human adenoviruses (HAdVs), particularly types 40 and 41, and human Astroviruses (HAstVs) are among the principal viral agents associated with diarrheal diseases, especially in children. This study aimed to determine the prevalence of adenoviruses and Astroviruses among patients and selected marine animals in the Republic of Guinea. Methods. A total of 290 samples were analyzed, including 250 stool samples from patients presenting with diarrhea at Kindia Regional Hospital and Gueckédou Prefectural Hospital, and 40 samples from marine animals collected in Conakry (fish, crabs, and mollusks). Viral detection was performed using real-time PCR for adenoviruses and RT-PCR for Astroviruses. Results were analyzed according to age, sex, season, clinical presentation, and socio-professional category using descriptive statistics and 95% confidence intervals. Results. Among human samples, 12 out of 250 were positive for adenovirus corresponding to an overall prevalence of 4.8%. Higher positivity rates were observed among children aged 0–15years (8.19%) and during the rainy season. No statistically significant differences were observed according to sex or socio-professional category. Astrovirus was detected in one marine animal sample (1/40(2.5%)), while no positive cases were identified in fish or crabs. Conclusion. Human adenoviruses circulate among patients with gastroenteritis in Guinea, particularly among children and during the rainy season. The detection of Astroviruses in a marine organism suggests a low but potential environmental or foodborne transmission risk, supporting the relevance of an integrated One Health approach.
RÉSUMÉ
Introduction. La gastro-entérite demeure une préoccupation majeure de santé publique dans les pays à faible revenu. Les adénovirus humains (HAdV), particulièrement les types 40 et 41, et les astrovirus humains (HAstV) figurent parmi les principaux agents viraux associés aux maladies diarrhéiques, notamment chez les enfants. Cette étude visait à déterminer la prévalence des adénovirus et des astrovirus chez des patients et certains animaux marins en République de Guinée. Méthodes. Au total, 290 échantillons ont été analysés, dont 250 échantillons de selles provenant de patients présentant une diarrhée à l'hôpital régional de Kindia et à l'hôpital préfectoral de Gueckédou, ainsi que 40 échantillons d'animaux marins collectés à Conakry (poissons, crabes et mollusques). La détection virale a été effectuée par PCR en temps réel pour les adénovirus et par RT-PCR pour les astrovirus. Les résultats ont été analysés selon l'âge, le sexe, la saison, la présentation clinique et la catégorie socioprofessionnelle à l'aide de statistiques descriptives et d'intervalles de confiance à 95 %. Résultats. Parmi les échantillons humains, 12 sur 250 étaient positifs pour l'adénovirus, correspondant à une prévalence globale de 4,8 %. Des taux de positivité plus élevés ont été observés chez les enfants âgés de 0 à 15 ans (8,19 %) et pendant la saison des pluies. Aucune différence statistiquement significative n'a été observée selon le sexe ou la catégorie socioprofessionnelle. L'astrovirus a été détecté dans un échantillon d'animal marin (1/40 (2,5 %)), tandis qu'aucun cas positif n'a été identifié chez les poissons ou les crabes. Conclusion. Les adénovirus humains circulent chez les patients atteints de gastro-entérite en Guinée, particulièrement chez les enfants et pendant la saison des pluies. La détection d'astrovirus dans un organisme marin suggère un risque de transmission environnementale ou alimentaire faible mais potentiel, soutenant la pertinence d'une approche intégrée « One Health ».

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Published

05/26/2026

How to Cite

André Saa Togbodouno, Roland Tenkiano, Emmanuel Saa Millimono, René Tamba Tolno, Jacqueline Sia Mara, Ramatoulaye Balde, … Mohamed Sahar Traore. (2026). Detection of Adenoviruses and Astroviruses in Patients and Marine Animals in the Republic of Guinea: Détection des Adénovirus et des Astrovirus Chez les Patients et les Animaux Marins en République de Guinée. HEALTH RESEARCH IN AFRICA, 4(6), 22–26. https://doi.org/10.5281/zenodo.20112843

Issue

Section

Infectiology - Microbiology

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