[Evolution of the number of authors in clinical and basic science journals in the Spanish language]. / Evolución del número de autores en revistas clínicas y básicas de lengua española.

The number of signing authors in Revista Clínica Española. Revista Española de Fisiología and Revista Española de Oncología have been analyzed from their first to the last received issue. The results obtained show an increasing number of authors in all journals specially during the 70s. The results also point out a relative decrease in the number of authors in basic sciences in relation to clinical publications. The increase in the number of authors in The Revista Española de Oncología has started somewhat later than the others. The environmental and professional stress as well as the interrelations between different hospital members have been suggested, amongst others, as the possible cause of these events.

[Seroepidemiology of Bartonella henselae infection in a risk group]. / Seroepidemiología de la infección por Bartonella henselae en un colectivo de riesgo.

BACKGROUND: Bartonella henselae infections are closely related to a number of clinical conditions of growing interest in our environment. As cats are the reservoir, and their bites and scratches are the main transmission mechanism, we attempted to study the seroepidemiology of the infection caused by this microorganism in a risk group of patients (cat owners) and a control group (blood donors). PATIENTS AND METHODS: October 1977. Measurement of antibody titres to B. henselae at different dilutions (breakpoint > or = 1:64) by indirect immunofluorescence (IFI) in 83 cat owners and 85 blood donors. Also, an epidemiologic investigation was carried out (age, sex, alcohol, intake, common cat exposure, cat bite or cat scratch, number and age of cats, bite or presence of fleas, use of repellents, clinical picture consistent with cat scratch disease [CSD]). RESULTS: Twenty-four cat owners (28.9%) and five blood donors (5.9%) had titres > or = 1:64 (OR: 6.51; 95% CI: 2.32 to 22.9). Also, the logistic regression analysis showed an association with daily alcohol intake and the previous antecedent of lymph node enlargement of unknown origin among cat owners. CONCLUSIONS: A high prevalence of antibodies to B. henselae was demonstrate among cat owners.