| [the efficacy of the prevaccination detection of anti-hav in hepatitis a vaccination programs]. | the convenience of carrying out prevaccination detection studies of hepatitis a virus (hav) markers depends on the relative costs of the detection and vaccination, as well as the prevalence of susceptible subjects in each population group to be vaccinated. the aim of this study was to analyze the efficacy of the systematic prevaccination detection of anti-hav antibodies in catalonia, spain. | 1995 | 7630228 |
| [prevalence of hepatitis b and hepatitis a virus infection among health sciences students in catalonia, spain]. | to know current hepatitis b (hbv) and hepatitis a (hav) infection status among a group of health sciences students during 1990-1993 period. | 1996 | 8965490 |
| [changes in seroepidemiology of hepatitis a virus infection in catalonia in the period 1989-1996. implications for new vaccination strategy]. | the aim of this study was to investigate the prevalence of the risk factors of hepatitis a virus infection (hav) in a representative sample of a catalonian population obtained from 1995 to 1996 and the changes in the prevalence of this infection over the period of 1989-1996. | 1999 | 10231772 |
| prospects for vaccination against hepatitis a and b in catalonia (spain). | catalonia is in an area of intermediate endemicity for hepatitis a virus (hav) infection. an expert committee has recently proposed the implementation of universal hepatitis a vaccination for 12-year-olds, based on the fact that no risk factors can be identified for hepatitis a in 50% of cases, and also that selective vaccination targeted at high-risk groups has a limited potential to reduce the incidence of hepatitis a. the well-established programme of hepatitis b vaccination of pre-adolescent ... | 2000 | 10683557 |
| prevalence of hepatitis a antibodies in schoolchildren in catalonia (spain) after the introduction of universal hepatitis a immunization. | the objective of this study was to investigate the prevalence of hepatitis a antibodies (anti-hav) in schoolchildren in catalonia and to compare it with the rates found in previous studies. sera from a representative sample of 1,342 children aged between 6 and 15 years, recruited in 2001, were tested for anti-hav. the results were related to sociodemographic variables and vaccination history. the overall prevalence of anti-hav was 51.4%. the prevalence was 5.5% in non-vaccinated children, simila ... | 2004 | 15122789 |
| hepatitis a virus in urban sewage from two mediterranean countries. | molecular methods for the detection and typing of hepatitis a virus (hav) strains in sewage were applied to determine its distribution in cairo and barcelona. the study revealed the occurrence of different patterns of hepatitis a endemicity in each city. the circulating strains characterized, whether in cairo or barcelona, were genotype ib. the effects of a child vaccination programme and the increase in the immigrant population on the overall hepatitis a occurrence in barcelona were evaluated. ... | 2007 | 16817987 |
| estimated incidence of hepatitis a virus infection in catalonia. | hepatitis a normally is underreported by statutory disease reporting systems. the objective of this study is to estimate the incidence of hepatitis a virus (hav) infection from prevalence surveys of infection carried out in representative samples of the population in 1989, 1996, and 2002 and the reported disease incidence during 1991 to 2003 in catalonia. | 2006 | 16843008 |
| [descriptive study of hepatitis outbreaks occurring in catalonia (1999-2003)]. | the currently low endemic level of hepatitis a in spain favors manifestation of the disease as outbreaks among specific risk groups. the aim of this study is to analyze the hepatitis a outbreaks investigated in catalonia (spain) during the period of 1999 to 2003. | 2006 | 16956531 |
| declining hepatitis a seroprevalence in adults in catalonia (spain): a population-based study. | one of the main uses of seroprevalence studies it to evaluate vaccination programmes. in 1998, a programme of universal vaccination of preadolescents in schools with the hepatitis a vaccine was begun in catalonia. the objective of this study was to investigate the prevalence and risk factors of hepatitis a virus infection (hav) in a sample of the adult population of catalonia in 2002 and to evaluate the changes with respect to a survey carried out in 1996. | 2007 | 17610736 |
| molecular epidemiology of hepatitis a virus infections in catalonia, spain, 2005-2009: circulation of newly emerging strains. | background: in spite of annual vaccination campaigns, hepatitis a cases increased in catalonia (north-east spain) in the period 2002-2005 calling for the elucidation of the underlying mechanisms associated to the epidemiological shifts. objective: the molecular characterization of the circulating strains to trace their origin and the study of the effects of vaccination on the incidence of sporadic and outbreak-associated cases. study design: forty-eight different hepatitis a virus (hav) strains ... | 2011 | 21798796 |
| effectiveness of hepatitis a vaccination as post-exposure prophylaxis. | hepatitis a (ha) has been a vaccine-preventable disease since 1995. in catalonia, a universal combined hepatitis a+b vaccination program of preadolescents was initiated at the end of 1998. however, outbreaks are reported each year and post-exposure prophylaxis (pep) with hepatitis a virus (hav) vaccine or immunoglobulin (ig) is recommended to avoid cases. the aim of this study was to assess the effectiveness of hav vaccine and ig in preventing hepatitis a cases in susceptible exposed people. a r ... | 2017 | 27925847 |
| hepatitis a virus genotype distribution during a decade of universal vaccination of preadolescents. | a universal vaccination program among preadolescents was implemented in catalonia, spain, during the period of 1999-2013 and its effectiveness has been clearly demonstrated by an overall significant attack rate reduction. however, reductions were not constant over time, and increases were again observed in 2002-2009 due to the occurrence of huge outbreaks. in the following years, in the absence of large outbreaks, the attack rate decreased again to very low levels. however, an increase of sympto ... | 2015 | 25815599 |