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Morphological identification of hookworm species in five regions of Cameroon

C.N. Dongmo

C.N. Dongmo

  • Laboratory of Parasitology and Ecology, Department of Animal Biology and Physiology, Faculty of Science, University of Yaounde IYaounde, Cameroon
  • Centre for Schistosomiasis and ParasitologyYaoundé, Cameroon
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Dongmo, C.N.
, 
H.B. Jatsa

H.B. Jatsa

  • Laboratory of Animal Physiology, Department of Animal Biology and Physiology, Faculty of Science, University of Yaoundé IYaoundé, Cameroon
  • Centre for Schistosomiasis and ParasitologyYaoundé, Cameroon
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Jatsa, H.B.
 e 
L-A Tchuem Tchuente

L-A Tchuem Tchuente

  • Laboratory of Parasitology and Ecology, Department of Animal Biology and Physiology, Faculty of Science, University of Yaounde IYaounde, Cameroon
  • Centre for Schistosomiasis and ParasitologyYaoundé, Cameroon
  • National Program for the Control of Schistosomiasis and Intestinal Helminthiasis, Ministry of Public HealthYaounde, Cameroon
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Tchuem Tchuente, L-A
  
12 dic 2024
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Pubblicato online: 12 dic 2024
Pagine: 224 - 231
Ricevuto: 31 dic 2023
Accettato: 25 lug 2024
DOI: https://doi.org/10.2478/helm-2024-0025
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© 2024 C.N. Dongmo et al., published by Sciendo
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Fig. 1.

Map of schools investigated for soil-transmitted helminths (STH) infections.
Map of schools investigated for soil-transmitted helminths (STH) infections.

Fig. 2.

Head of a hookworm L3 larvae recovered from a hookworm-positive faecal sample
Head of a hookworm L3 larvae recovered from a hookworm-positive faecal sample

Fig. 3.

Tail of a hookworm L3 larvae recovered from a hookworm-positive faecal sample.
Tail of a hookworm L3 larvae recovered from a hookworm-positive faecal sample.

Fig. 4.

Hookworm entire L3 larvae recovered from hookworm-positive faecal samples.
Hookworm entire L3 larvae recovered from hookworm-positive faecal samples.

Detailed morphological characteristics of filariform (L3) larvae of hookworm (Yoshida, 1966; WHO, 1981)_

Morphological Keys A. duodenale N. americanus
Length 660 microns 590 microns
Mouth Less visible 660 microns; Appears dark
Sheath 720 microns; Less striated Visibly striated and more clearly seen around the end of the body
Oesophagus and intestine ¼ body length; no gap between the oesophagus and the intestine ¼ body length; gap between the oesophagus and the intestine
Intestine The anterior end is narrower in diameter than the oesophageal bulb The anterior end is as wide as the oesophageal bulb
Tail Blunt Sharply pointed

Number of L3 larvae characterized for hookworm species identification in five regions of Cameroon_

Region Number of schools investigated Number of stool samples cultured Sensibility of Harada-Mori method (%) Number of L3 larvae dentified
N. americanus A. duodenale
Adamawa 42 60 68.33 2852 0
North 75 10 40 315 0
Far-North 140 25 32 686 0
South-West 12 45 71.11 3565 0
Littoral 6 17 76.47 413 230
Total 275 157 57.58 7831 230
Lingua:
Inglese
Frequenza di pubblicazione:
4 volte all'anno
Argomenti della rivista:
Scienze biologiche, Zoologia, Ecologia, Scienze della vita, altro, Medicina, Medicina clinica, Microbiologia, Virologia ed Epidemiologia infettiva
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