Retrospective observational study on the impact of the Covid-19 pandemic on the prescription of medications for the treatment of Attention Deficit/Hyperactivity Disorder. Comparison of a European and an American cohort.

Background: Attention Deficit Hyperactivity Disorder (ADHD) is a neuropsychological disorder that affects the development of children and adolescents. The causes are not fully known although the origin of the disorder appears to depend on a combination of environmental, social, biochemical, and genetic factors. There is substantial evidence the Covid-19 pandemic caused an increase in mental disorders and therefore in spending related to the treatment of diseases.

Health effects associated with the disposal of solid waste in landfills and incinerators in populations living in surrounding areas: a systematic review.

Objectives: Potential health hazards for the environment and people living nearby landfills and incinerators are claimed to be related to several methods of waste management. Independent systematic review of the scientific literature is a key procedure to support the lay public and policy makers to achieve informed decisions.

Methods: The study design and potential biases of papers retrieved in this comprehensive literature search were analyzed.

Rare HVR1-HCV genotype 1b variants in patients with B non Hodgkin's lymphoma. Comparison with viral sequences detected in cases of lymphoproliferative disorders and B cell compartmentalisation.

We compared the E2-HVR1 region in HCV-1b positive B-NHL cases from a multicenter study with sequences from studies related to lymphoproliferative disorders and B cell compartmentalisation. We found rare and unique mutations both in B-NHL isolates and in cases with lymphoproliferative disorders and lymphocyte infection. These rare mutations could have an important effect on HVR1 region and, as a consequence, on the binding of E2 on CD81, with a possible implication for both antigenic stimulation and HCV entry.

High prevalence of hepatitis B virus infection in B-cell non-Hodgkin's lymphoma.

In this hospital-based, multicenter case-control study we investigated the prevalence of hepatitis B virus (HBV)-related markers and HBV/hepatitis C virus (HCV) co-infection among B-cell non-Hodgkin's lymphoma (B-NHL) cases and controls. Four hundred newly diagnosed B-NHL cases and 392 controls from other departments of the same hospitals were studied. The prevalence of positivity for hepatitis B surface antigen (HBsAg) was 8.

Prevalence of hepatitis C virus infection in lymphoproliferative diseases other than B-cell non-Hodgkin's lymphoma, and in myeloproliferative diseases: an Italian Multi-Center case-control study.

Background And Objectives: Infection with hepatitis C virus (HCV) is associated with type II mixed cryoglobulinemia (MC), a lymphoproliferative disorder which, in some patients, evolves into overt B-cell non-Hodgkin's lymphoma (B-NHL). Recently, also the association between HCV infection and B-NHL, which had long been controversial, was confirmed in a large case-control study. Little knowledge is, however, available on possible associations between HCV infection and other lymphoid or myeloid malignancies.

Unintended events following immunization with MMR: a systematic review.

Public debate over the safety of the trivalent measles, mumps and rubella (MMR) vaccine and the drop in vaccination rates in several countries persists despite its almost universal use and accepted effectiveness. We carried out a systematic review to assess the evidence of unintended effects (beneficial or harmful) associated with MMR and the applicability of systematic reviewing methods to the field of safety evaluation. Eligible studies were comparative prospective or retrospective on healthy individuals up to 15 years of age, carried out or published by 2003.

Hepatitis C virus and B-cell non-Hodgkin lymphomas: an Italian multicenter case-control study.

The existence of an association between infection with hepatitis C virus (HCV) and B-cell non-Hodgkin lymphoma (B-NHL) remains controversial, largely because previous studies were based on prevalent case series or comparisons with less than optimal control groups. This hospital-based case-control study was conducted from January 1998 through February 2001 to evaluate the association between HCV infection and B-NHL of different types. Cases were consecutive patients with a new diagnosis of B-NHL; controls were patients from other departments of the same hospitals.

Factors affecting the compliance of the antenatal hepatitis B screening programme in Italy.

The effectiveness in the prevention of perinatally transmitted HBV infection was assessed in 11858 pregnant women consecutively recruited in public and private hospitals in six Italian regions during a 2 months period in 2001. Of them 10881 (91.8%) attended HBsAg antenatal screening.