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Your search keyword '"de Melo, Cristiano B."' showing total 4 results
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2. Fatal Human Alphaherpesvirus 1 Infection in Free-Ranging Black-Tufted Marmosets in Anthropized Environments, Brazil, 2012-2019

Author

Wilson, Tais M., Ritter, Jana M., Martines, Roosecelis B., Bullock, Hannah A., Fair, Pamela, Radford, Kay W., Macedo, Isabel L., Sousa, Davi E.R., Goncalves, Alexandra A.B., Romano, Alessandro P., Passsos, Pedro H.O., Ramos, Daniel G., Costa, Gabriela R.T., Cavalcante, Karina R.L.J., de Melo, Cristiano B., Zaki, Sherif R., and Castro, Marcio B. more...

Subjects
Statistics, Diseases, Risk factors, Patient outcomes, Health aspects, Marmosets -- Statistics -- Diseases, Central nervous system infections -- Statistics -- Risk factors, Disease transmission -- Statistics -- Risk factors, Herpesvirus infections -- Statistics -- Risk factors -- Patient outcomes, Human-animal relationships -- Health aspects, Herpes -- Statistics -- Risk factors -- Patient outcomes, Central nervous system diseases -- Statistics -- Risk factors, Herpesvirus diseases -- Statistics -- Risk factors -- Patient outcomes
Abstract

The coronavirus disease (COVID-19) pandemic has brought the One Health concept to the forefront of global health. From an infectious disease standpoint, the focus of One Health is often on [...]

Published
2022
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4. [Susceptibility of the horn fly (Haematobia irritans) to insecticides in the Tabuleiros Costeiros region in states of Alagoas, Bahia and Sergipe, Brazil].

Author

de Oliveira AA, Azevedo HC, de Melo CB, and de Barros AT

Subjects
Animals, Brazil, Drug Evaluation, Diazinon pharmacology, Insecticides pharmacology, Muscidae drug effects, Permethrin pharmacology, Pyrethrins pharmacology
Abstract

Susceptibility of horn fly populations to insecticides was evaluated at the Tabuleiros Costeiros region in the states of Alagoas, Bahia, and Sergipe from April 2001 to December 2002. A total of 37 bioassays were conducted in 23 ranches from 12 municipalities. Fly susceptibility was determined by the impregnated filter paper method using the active ingredients diazinon, permethrin, and cypermethrin. A high susceptibility to diazinon was found, with LC50 varying from 0.23 to 1.41 microg/cm2 and resistance ratios (RR) = 1.3. On the other hand, resistance to pyrethroids was detected in all studied populations. Cypermethrin LC50 ranged from 19.94 to 1,928 microg/cm2 and RR from 21.2 to 4,484.4. Although resistance levels to permethrin were much lower (RR<6), all LC50 were significantly higher than the LC50 obtained from the susceptible population. All ranches relied on pyrethroids for horn fly control, most cypermethrin (88.46%) and deltamethrin (80.77%) products. Spraying, by using manual backpack sprayers, was routinely used in all ranches. History of insecticide use as well as inadequate control practices help to explain the spread resistance of horn fly populations to pyrethroids detected in the region. more...

Published
2006