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1.
Med. interna Méx ; 33(5): 648-654, sep.-oct. 2017. tab
Article in Spanish | LILACS | ID: biblio-894306

ABSTRACT

Resumen: La fiebre amarilla es una infección viral ictérico-hemorrágica trasmitida por mosquitos del género Haemagogus en su ciclo selvático y Aedes aegypti en el urbano. En México hubo brotes y epidemias en puertos del Golfo de México y del litoral del Pacífico desde la Colonia hasta mediados del siglo XX. El médico cubano Carlos J Finlay en 1881 expuso la posibilidad de trasmisión por medio de vectores, lo que se corroboró en 1890 y en México, en 1903, se iniciaron trabajos de erradicación de vectores logrando el control de la enfermedad con el último caso urbano en 1923 y selvático en 1959. Sin embargo, ante el resurgimiento en nuestro continente es importante la revisión de la enfermedad y estar alertas ante la posible aparición de casos importados o autóctonos en nuestro país.


Abstract: Mosquitoes transmit yellow fever, a viral infection characterised by haemorrhage and jaundice. Currently, it is endemic in African and South American countries whereas our country has been declared free of the disease since 1959 following the latest outbreaks and epidemics occurred in coastal cities from both the Gulf of Mexico and the Pacific coast that were registered from the Colony until the middle of century XX. In 1881, Carlos J Finlay, who was a Cuban physician, exposed the hypothesis concerning the transmission of yellow fever by vectors; such theory was corroborated in 1890. In 1903, Mexico started working to eradicate the disease through control of mosquitoes. Finally, in 1923 Mexico achieved the control of the disease with the last urban case registered, whereas the last jungle case was recorded in 1959. However, due to the resurgence of the disease in our continent, it is important to provide the clinician with a comprehensive review of the disease and to raise awareness of the possible occurrence of imported or autochthonous cases in our territory.

2.
Med. interna Méx ; 33(3): 351-362, may.-jun. 2017. graf
Article in Spanish | LILACS | ID: biblio-894271

ABSTRACT

Resumen El género Rickettsia está compuesto por dos grupos definidos antigenicamente: el grupo tifus, que incluye a Rickettsiaprowazekii, causante del tifus epidémico o exantemático, y a R. typhi, causante del tifus murino o endémico; el otro grupo es el de las fiebres manchadas. El género Rickettsia está constituido por diferentes especies de bacterias gramnegativas; a su vez, forma parte de la familia Rickettsiaceae (junto a Coxiella, Ehrlichia y Bartonella). Todas las especies del género tienen en común ser parásitos intracelulares estrictos con tamaño promedio de 0.3 a 0.5 pm, además de que requieren ciertos vectores que permitan su trasmisión y es difícil cultivarlas en el laboratorio. Este artículo revisa las variedades de manifestación del tifus y su situación en México.


Abstract The genus Rickettsia is composed of two groups antigenically defined, typhus group including Rickettsia prowazekii, which causes epidemic typhus and R. typhi, which causes murine or endemic typhus. The other group is one of spotted fever. The genus Rickettsia is made up of different species of gramnegative bacteria, in turn it is part of the family Rickettsiaceae (with Coxiella, Ehrlichia, and Bartonella). All species of the genus have in common being strict intracellular parasites with an average size of 0.3 to 0.5 pm, require certain vectors that allow trasmission, and have great difficulty be grown in the laboratory. Below there is a review of the varieties of presentation of typhus and its situation in Mexico.

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