[Determination of antibodies against A-60 antigen for diagnosis of M. tuberculosis infection. A useful tool for rationalization of chemoprophylaxis in HIV patients].

Objective: To identify M. tuberculosis infection in HIV patients by use of PPD and an ELISA test detecting the presence of antibodies against antigen A-60 of M. bovis.

[Evaluation of methods of tick removal in human ixodidiasis].

Background: There are two questions regarding tick transmitted diseases (Ixodidae) not sufficiently elucidated: How to remove the arthropod? and: should antibiotic prophylaxis be administered after the bite?

Subjects And Methods: From June 1st, 1991, to December, 31, 1992, all patients who were attended at La Rioja Hospital relating immediate bite or tick bite within the 48 hours before were prospectively studied. In all those patients an epidemiological inquiry was obtained, which included, apart from personal data and risk factors for tick bites, how arthropods had been removed, health exam and blood drawn for serological study for Borrelia burgdorferi and Rickettsia conorii. The protocol was repeated at one, two, four and six months after the bite.

[Erythema chronicum migrans (Lyme's disease). Clinico-epidemiologic study of 10 cases].

Migratory Chronic Erythema (MCE), which is the distinctive and diagnostic lesion of Lyme's disease, could manifest itself under different clinical manifestations. Following a clinical and a epidemiological point of view 10 cases of MCE, diagnosed during the last three years, have been studied and described. Its wide variability of the clinical manifestations is underlined, with a mean incubation period of 5.