PMID: 7027979Jan 1, 1981Paper

Sero-epidemiological studies on diffusion of viral hepatitis "A" and "B" in Turin (Italy) (author's transl)

Annali Sclavo; rivista di microbiologia e di immunologia
G GiulianiD Frezet

Abstract

The age-prevalence of antibodies directed against the hepatitis viruses A (anti-HAV) and B (anti-HBs and anti-HBc) has been studied in an open sample of population of Turin (Italy), made up by 680 persons. Is has been shown that all three types of antibodies are present at birth, thast they progressively decrease and than again raise, from 6-10 years of age, up to 70-75%, 35% and about 40% in adults, respectively for anti-HAV, anti-HBs and anti-HBc. A further peak over 97% after 40 years for anti-HAV likely means a past higher spreading of the virus. The conclusion is drawn that, for both hepatitis A and B, the percentage of positive and the time of appearance of active humoral immunity after the loss of maternal antibodies are typical medium level of hygienic conditions. The comparison of anti-HBs and anti-HBc behaviour has shown that the latter is more frequent and at least as persistent as the former, and that it should not therefore be obligatory considered ia a marker of viral replication.

Related Concepts

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.

Related Papers

Epidemiologie, mikrobiologie, imunologie : casopis Spolecnosti pro epidemiologii a mikrobiologii Ceské lékarské spolecnosti J.E. Purkyne
R ChlibekM Splino
Bollettino dell'Istituto sieroterapico milanese
G GiustiG B Gaeta
© 2021 Meta ULC. All rights reserved