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J L Taberner

Publications and source records attributed to J L Taberner.

26 records · Page 2Linked to original sources

[A change in the epidemiologic pattern of hepatitis A in Spain].

BACKGROUND: Seroepidemiologic studies carried out in different countries show that the prevalence of markers for infection by hepatitis A (HVA) is progressively decreasing in relation with improvement in the level of health care. The prevalence of anti-HVA in Catalunya and the factors related with infection by HVA were studied in order to obtain bases for designing prevention strategies adequate for the epidemiology of this infection. METHODS: Anti-HVA was determined by a method of enzyme immunoassay in a randomized sample of the general population in Catalunya. Investigation of the influence of socio/demographic variables in the prevalence of HVA infection was carried out. RESULTS: The global prevalence of anti-HVA was of 36%. In the population from 6 to 14 years of age it was of 13% and that of those over the age of 15 it was 86%. The prevalence of anti-HVA increases with age and is related with the social level of the families, the level of education and the place of birth. The incidence was higher in children of the lowest social class, in adults with the least education and in those born outside Catalunya. These factors constituted independent risk factors of HVA infection. CONCLUSIONS: The present study confirms the association between HVA infection and socio-economic factors and demonstrates that the infection is not commonly found in infancy, an increase in the number of susceptible adults is foreseeable.

Age Factors↗

[The prevalence of tetanus antibodies in the adult population of Catalonia].

BACKGROUND: The aim of this study was to know the immune state of the adult population of Catalonia (Spain) versus tetanus. METHODS: The prevalence of antitetanic antibodies was determined in a representative sample (n = 604) of this population group (greater than or equal to 15 years). The technique used as that of passive hemagglutination reaction. The field work was carried out during 1989. RESULTS: 37.7% of the males and 15.7% of the females (p less than 0.001) presented titres of protector antibodies (greater than or equal to 0.01 Ul/ml) versus tetanus. The prevalence of antibodies was higher in youths of either sex and progressively descended with age. No statistically significant association was found upon performance of multivariate analysis between the sociodemographic variables (place of birth, level of education, residence, social class) and the prevalence of antibodies. CONCLUSIONS: The results of this study demonstrate that antitetanic vaccination currently being undertaken is not sufficient to insure adequate protection during adult life thus potentiating the need for the vaccination of adults in Catalonia.

Adult↗

Prevalence of hepatitis B markers in the population of Catalonia (Spain). Rationale for universal vaccination of adolescents.

The prevalence of hepatitis B markers was determined in a representative sample of the general population of Catalonia (Spain). HBsAg was found in 0.5% of children (less than 15 years of age) and in 1.7% of adults (more than 15 years of age), and anti HBs in 1.6% and 18%, respectively. Age-specific prevalence for both markers showed a low risk for hepatitis B before puberty, and a progressive rise since adolescence, suggesting that perinatal transmission and horizontal transmission in children are relatively uncommon in Spain. Prevalence of hepatitis B markers was significantly higher among subjects with low education level, residing in an urban area and born outside Catalonia, but in the stratified analysis, a statistical significant difference was only maintained in the prevalence of HBV markers between those who live in urban and rural areas, and between those who were born outside Catalonia and in Catalonia. These data may be used as a basis for a strategy of hepatitis B prevention in Spain which include universal vaccination of adolescents, passive-active immunization of newborns to HBsAg positive mothers and vaccination of susceptible adults subjects from high-risk groups.

Adolescent↗

Incidence of type 1 (insulin-dependent) diabetes mellitus in Catalonia, Spain. The Catalan Epidemiology Diabetes Study Group.

The incidence of Type 1 (insulin-dependent) diabetes mellitus was prospectively evaluated in Catalonia, Spain in patients up to 30 years of age during the period 1987-1990. The population at risk (0-29 years) consisted of 2,690,394 inhabitants (total population of Catalonia 5,978,638). All the cases were independently identified from four sources: endocrinologists, sales of blood glucose monitors and insulin pen injectors, diabetes societies and diabetic summer camps. The degree of ascertainment was 90.1%. The overall observed incidence rate was 10.7 per 100,000 per year, being 11.5 per 100,000 per year in the 0-14 age group. The incidence in males (12.0 per 100,000 per year) was higher than in females (9.3 per 100,000 per year), with a male/female ratio of 1.36/l. The sex differences were only present in cases over 14 years of age. Age specific incidence rates per 100,000 per year were 4.4 (confidence interval 95%: 3.2-5.7) in the age group 0-4, 9.9 (8.5-11.4) in 5-9, 17.5 (15.7-19.4) in 10-14, 11.4 (9.9-13.0) in 15-19, 11.3 (9.7-13.0) in 20-24 and 8.5 (7.2-9.9) in 25-29. There was a seasonal onset pattern, with the highest incidence in winter (December-February). We conclude that the incidence of Type 1 diabetes observed in Catalonia during the period 1987-1990 is higher than that recently reported in other Mediterranean countries. This study offers the first standardized data on Type 1 diabetes incidence in Catalonia, including cases up to 30 years, and contributes to the knowledge of the epidemiology of diabetes in South Europe.

Adolescent↗

Seroepidemiological survey of hepatitis B infection in a cohort of military recruits in Barcelona, Spain.

The prevalence of HBsAg and anti-HBs in a representative sample of 839 recruits from a cohort of 17-18 year-old males living in Barcelona has been determined by radioimmunoassay of eluates of finger-prick dried blood. It was 0.48% for HBsAg, and 3.22% for anti-HBs. All carriers of HBsAg were anti-HBe positive and had normal liver function tests. Half of them had antecedents suggestive of a materno-fetal acquisition of the infection. A relationship between educational level and the risk of infection was also demonstrated.

Adolescent↗

Epidemiologic study of an outbreak of clenbuterol poisoning in Catalonia, Spain.

In an investigation of 113 cases of clenbuterol poisoning in Catalonia, Spain, in 1992, more than 50 percent of those affected were found to have had symptoms of nervousness, tachycardia, muscle tremors, myalgia, and headache. There was no significant difference in the distribution of symptoms according to sex (P = 0.97). The period of incubation varied between 15 minutes and 6 hours and the duration of symptoms between 90 minutes and 6 days. Clenbuterol was detected in 47 urine samples in amounts ranging from 11 to 486 parts per billion. No traces of clenbuterol were found in serum samples. Intoxication occurred in association with the ingestion of veal liver, irrespective of the way in which the liver had been cooked. The association between consuming liver and falling ill was statistically significant (P < 0.0001). In one family, the suspected source of intoxication was meat (veal tongue) and in another canneloni. None of the patients died as a result of the intoxication. The findings reinforce the need to uphold the prohibition of the use of clenbuterol in cattle farming in those countries and communities where it already exists and to contemplate a stricter regulation of its therapeutic use.

Adolescent↗