Spatial distribution of Haemaphysalis species ticks and human Kyasanur Forest Disease cases along the Western Ghats of India, 2017–2018

N. Naren babu, Anup Jayaram, H. Hemanth Kumar, Prashant Pareet, Sarthak Pattanaik, Amogh Milind Auti, Jazeel Abdulmajeed, Hindol Maity, Santhosha Devadiga, Yuvraj Bhandari, H. Agre Deepchand, Muhammed Shakir, Nishikant Kumar, Govindakarnavar Arunkumar

Research output: Contribution to journalArticle

Abstract

Kyasanur Forest Disease (KFD) is a viral haemorrhagic fever, transmitted to humans and other hosts by a tick vector of genus Haemaphysalis. It affects 400–500 people annually in the Western Ghats region of India through spring to summer season. To understand the species composition, distribution, and abundance of Haemaphysalis ticks in endemic taluks (sub-districts) of India, a surveillance for ticks was conducted between October 2017 and January 2018. In total 105 sites were selected based on grid sampling from five taluks representing five KFD endemic states in south India. A sum of 8373 ticks were collected by using standard flagging method. The study showed a wide distribution of host seeking tick species among the selected taluks, wherein Haemaphysalis spinigera was predominant in 3/5 taluks, Haemaphysalis bispinosa in 1/5 taluks, and both the species in 1/5 taluks. Further, the H. spinigera abundance was categorised and compared with the incidence of human cases during the same season. The grids with very high and high H. spinigera abundance had 70% of the 205 human cases reported. This method of tick surveillance could be efficiently used as a standard model for KFD transmission risk assessment and prediction of impending outbreaks.

Original languageEnglish
Pages (from-to)435-447
Number of pages13
JournalExperimental and Applied Acarology
Volume77
Issue number3
DOIs
Publication statusPublished - 01-03-2019

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Haemaphysalis
tick
ticks
spatial distribution
India
host seeking
disease transmission
monitoring
fever
risk assessment
incidence
species diversity
prediction
summer
sampling
methodology

All Science Journal Classification (ASJC) codes

  • Ecology
  • Insect Science

Cite this

Naren babu, N. ; Jayaram, Anup ; Hemanth Kumar, H. ; Pareet, Prashant ; Pattanaik, Sarthak ; Auti, Amogh Milind ; Abdulmajeed, Jazeel ; Maity, Hindol ; Devadiga, Santhosha ; Bhandari, Yuvraj ; Agre Deepchand, H. ; Shakir, Muhammed ; Kumar, Nishikant ; Arunkumar, Govindakarnavar. / Spatial distribution of Haemaphysalis species ticks and human Kyasanur Forest Disease cases along the Western Ghats of India, 2017–2018. In: Experimental and Applied Acarology. 2019 ; Vol. 77, No. 3. pp. 435-447.
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abstract = "Kyasanur Forest Disease (KFD) is a viral haemorrhagic fever, transmitted to humans and other hosts by a tick vector of genus Haemaphysalis. It affects 400–500 people annually in the Western Ghats region of India through spring to summer season. To understand the species composition, distribution, and abundance of Haemaphysalis ticks in endemic taluks (sub-districts) of India, a surveillance for ticks was conducted between October 2017 and January 2018. In total 105 sites were selected based on grid sampling from five taluks representing five KFD endemic states in south India. A sum of 8373 ticks were collected by using standard flagging method. The study showed a wide distribution of host seeking tick species among the selected taluks, wherein Haemaphysalis spinigera was predominant in 3/5 taluks, Haemaphysalis bispinosa in 1/5 taluks, and both the species in 1/5 taluks. Further, the H. spinigera abundance was categorised and compared with the incidence of human cases during the same season. The grids with very high and high H. spinigera abundance had 70{\%} of the 205 human cases reported. This method of tick surveillance could be efficiently used as a standard model for KFD transmission risk assessment and prediction of impending outbreaks.",
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Naren babu, N, Jayaram, A, Hemanth Kumar, H, Pareet, P, Pattanaik, S, Auti, AM, Abdulmajeed, J, Maity, H, Devadiga, S, Bhandari, Y, Agre Deepchand, H, Shakir, M, Kumar, N & Arunkumar, G 2019, 'Spatial distribution of Haemaphysalis species ticks and human Kyasanur Forest Disease cases along the Western Ghats of India, 2017–2018', Experimental and Applied Acarology, vol. 77, no. 3, pp. 435-447. https://doi.org/10.1007/s10493-019-00345-9

Spatial distribution of Haemaphysalis species ticks and human Kyasanur Forest Disease cases along the Western Ghats of India, 2017–2018. / Naren babu, N.; Jayaram, Anup; Hemanth Kumar, H.; Pareet, Prashant; Pattanaik, Sarthak; Auti, Amogh Milind; Abdulmajeed, Jazeel; Maity, Hindol; Devadiga, Santhosha; Bhandari, Yuvraj; Agre Deepchand, H.; Shakir, Muhammed; Kumar, Nishikant; Arunkumar, Govindakarnavar.

In: Experimental and Applied Acarology, Vol. 77, No. 3, 01.03.2019, p. 435-447.

Research output: Contribution to journalArticle

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T1 - Spatial distribution of Haemaphysalis species ticks and human Kyasanur Forest Disease cases along the Western Ghats of India, 2017–2018

AU - Naren babu, N.

AU - Jayaram, Anup

AU - Hemanth Kumar, H.

AU - Pareet, Prashant

AU - Pattanaik, Sarthak

AU - Auti, Amogh Milind

AU - Abdulmajeed, Jazeel

AU - Maity, Hindol

AU - Devadiga, Santhosha

AU - Bhandari, Yuvraj

AU - Agre Deepchand, H.

AU - Shakir, Muhammed

AU - Kumar, Nishikant

AU - Arunkumar, Govindakarnavar

PY - 2019/3/1

Y1 - 2019/3/1

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