HUMAN PARASITISM BY Rhipicephalus sanguineus sensu lato (ACARI: IXODIDAE) IN MATO GROSSO DO SUL, WEST-CENTRAL BRAZIL

Abstract

Human parasitism by the brown dog tick Rhipicephalus sanguineus sensu lato (s. l.), an important parasite in medical and veterinary sciences, is only rarely reported in the American continent. The present investigation reports a R. sanguineus s. l. male tick parasitizing a human in the city of Campo Grande, State of Mato Grosso do Sul, west-central Brazil. This observation is of public health relevance, since R. sanguineus s. l. ticks are known as vectors of spotted fever group rickettsiae to dogs and humans. Keywords: Rhipicephalus sanguineus. Tick. Human parasitism. ResumoO parasitismo humano pelo carrapato marrom do cão, Rhipicephalus sanguineus sensu lato (s. l.), um importante parasita para a saúde pública e veterinária, é raramente relatado no continente americano. Este trabalho relata o registro de um macho de R. sanguineus s. l. parasitando um humano na cidade de Campo Grande, estado do Mato Grosso do Sul, no Centro-Oeste do Brasil. Essa observação é relevante para a saúde pública, uma vez que os carrapatos desse complexo são conhecidos como vetores de riquétsias do grupo da febre maculosa para cães e humanos. Palavras-chave: Rhipicephalus sanguineus. Carrapato. Parasitismo humano.

Monitoring of evolution of resistance to commercial acaricidal products in Rhipicephalus sanguineus sensu lato (Latreille, 1806) (Acari: Ixodidae) from Goiânia, Goiás State, Brazil

“…Living with domestic dogs infested by this tick results in occasional parasitism in humans, mainly due to its immature forms, with an increase in the number of reports of this parasitism, as well as in the diagnosis of emerging human pathogens in this tick, including Rickettsia rickettsii, R, conorii, R. parkeriand, R. amblyommatis, in addition to Candidatus Rickettsia andeanae, etiological agents of diseases of the etiological group of spotted fever in several parts of the world. 2,[8][9][10][11][12][13][14][15][16][17][18] A large sum of resources has been employed in the use of chemical acaricides as the main way to combat ticks, however, the indiscriminate use of these compounds in tick control has led to a large increase in selection pressure for acaricide resistance. Development of resistance in R. sanguineus to arsenical acaricides, 19 organophosphates, carbamates 20 and organochlorines 21 was observed in the 70's.…”