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Elsevier, Vaccine, 49(30), p. 7084-7089

DOI: 10.1016/j.vaccine.2012.09.051

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Efficacy of Hyalomma scupense (Hd86) antigen against Hyalomma excavatum and H. scupense tick infestations in cattle

This paper is available in a repository.
This paper is available in a repository.

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Abstract

The Rhipicephalus microplus recombinant Bm86-based tick vaccines have shown their efficacy for the control of several Hyalomma cattle ticks genera, namely H. dromedarii and H. anatolicum. However, H. scupense species, the most important tick in North Africa has never been studied. Vaccination trials using either a recombinant Bm86-based vaccine or a recombinant Hd86-based vaccine (the Bm86 ortholog in H. scupense) were conducted in cattle against immature and adult H. scupense ticks and adult H. excavatum ticks. The results showed a 59.19% reduction in the number of scupense nymphs engorging on Hd86 vaccinated cattle. However, cattle vaccination with Bm86 or Hd86 did not have an effect on H. scupense or H. excavatum adult ticks infestations. These results showed that Hd86 vaccines are selectively effective against H. scupense immature instars and emphasize on an integrated anti-tick vaccine control in North Africa. ; This research was supported by the Wellcome Trust Animal Health Initiative in the Developing World grant entitled “Adapting Recombinant Anti-Tick Vaccines To Livestock In Africa” (Wellcome Trust Project number: 075799) and by the “Laboratoire d’Epidémiologie des Maladies enzootiques des Herbivores en Tunisie” (LR02AGRO3) funded by the Ministry of Higher Education and Scientific Research of Tunisia. ; Peer Reviewed