title: Epidemiology of delta infection in Spain.
abstract: The prevalence of hepatitis D virus infection was studied in 954 sera samples collected in Spain between 1974 and 1986 from 838 patients in a variety of epidemiological categories with HBsAg-positive liver disease, and from 116 haemophiliacs and drug addicts with hepatitis B antibodies. Hepatitis D markers were detected in 64% of drug addicts and 33% of HBsAg-positive haemophiliacs but were absent in asymptomatic chronic carriers, homosexual males, mentally retarded patients and haemodialysis patients. Hepatitis D markers were found in 6% of patients with acute hepatitis, in 5.6% of those with chronic hepatitis B from general population, and in 65% of those with acute hepatitis B and 67% of those with chronic hepatitis B among drug addicts. During the 12-year study, no changes were observed in the frequency of Delta infection. The prevalence was less than 10% in chronic HBsAg-positive hepatitis. These findings indicate that in Spain Delta infection is restricted mainly to HBsAg-positive drug addicts and multitransfused haemophiliacs, while in the general population only 6.7% of those with chronic hepatitis B show D superinfection. Anti-HD sera detection is correlated with more severe forms of chronic hepatitis such as chronic active hepatitis and cirrhosis.
authors.affiliation: Department of Internal Medicine, Ciudad Sanitaria Valle de Hebron, Universidad Autonoma, Barcelona, Spain.
authors.forename: M
authors.initials: M
authors.lastname: Buti
authors.forename: R
authors.initials: R
authors.lastname: Esteban
authors.forename: R
authors.initials: R
authors.lastname: Jardi
authors.forename: H
authors.initials: H
authors.lastname: Allende
authors.forename: J M
authors.initials: JM
authors.lastname: Baselga
authors.forename: J
authors.initials: J
authors.lastname: Guardia
mesh_terms: D004812:Epidemiologic Methods; D006467:Hemophilia A / Q000150:complications; D006509:Hepatitis B / Q000150:complications; D003699:Hepatitis D / Q000150:complications / Q000453:epidemiology*; D006521:Hepatitis, Chronic / Q000150:complications; D006801:Humans; D013030:Spain; D019966:Substance-Related Disorders / Q000150:complications