[Invasive listeriosis - a rare and often severe infectious disease].

We describe the case of an immunocompromised patient in whom a severe infection with meningoencephalitis was detected. Listeria monocytogenes was the pathogen. Invasive listeriosis is a rare infectious disease that is notifiable in Switzerland and can be lethal.

Healthcare institutions' recommendation regarding the use of FFP-2 masks and SARS-CoV-2 seropositivity among healthcare workers: a multicenter longitudinal cohort study.

Background: Health care workers (HCW) are heavily exposed to SARS-CoV-2 from the beginning of the pandemic. We aimed to analyze risk factors for SARS-CoV-2 seroconversion among HCW with a special emphasis on the respective healthcare institutions' recommendation regarding the use of FFP-2 masks.

Methods: We recruited HCW from 13 health care institutions (HCI) with different mask policies (type IIR surgical face masks vs.

Characteristics of Three Different Chemiluminescence Assays for Testing for SARS-CoV-2 Antibodies.

Several tests based on chemiluminescence immunoassay techniques have become available to test for SARS-CoV-2 antibodies. There is currently insufficient data on serology assay performance beyond 35 days after symptoms onset. We aimed to evaluate SARS-CoV-2 antibody tests on three widely used platforms.

Temporal Course of SARS-CoV-2 Antibody Positivity in Patients with COVID-19 following the First Clinical Presentation.

Knowledge of the sensitivities of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) antibody tests beyond 35 days after the clinical onset of COVID-19 is insufficient. We aimed to describe positivity rate of SARS-CoV-2 assays employing three different measurement principles over a prolonged period. Two hundred sixty-eight samples from 180 symptomatic patients with COVID-19 and a reverse transcription polymerase chain reaction (RT-PCR) test followed by serological investigation of SARS-CoV-2 antibodies were included.

Flattening the curve in 52 days: characterisation of the COVID-19 pandemic in the Principality of Liechtenstein - an observational study.

Background: The principality of Liechtenstein had its first COVID-19 case at the beginning of March 2020. After exponential growth, the pandemic’s first wave was contained, with the last case being diagnosed 52 days after the initial occurrence.

Aim: To characterise the COVID-19 pandemic in Liechtenstein.

Fatal herpes simplex virus hepatitis in a patient with esophageal cancer under radiochemotherapy.

Background: Herpes simplex virus (HSV) infections are frequent. However, HSV hepatitis is rare and may lead to a life-threatening condition.

Case Report: A 68-year-old patient with a locally advanced and inoperable esophageal carcinoma was treated with induction chemotherapy and combined chemoradiation.

Epstein-Barr virus DNA in serum in a HIV-infected patient during development and treatment of non-Hodgkin's lymphoma.

Immunocompromised patients are at risk of developing Epstein-Barr virus (EBV)-related lymphoproliferative disorders. Quantitative determination of serum EBV DNA permits early diagnosis of an AIDS-related non-Hodgkin's lymphoma, and surveillance of treatment response and/or relapse, and thus may be a useful tool to monitor disease activity.

Three consecutive outbreaks of Serratia marcescens in a neonatal intensive care unit.

We investigated an outbreak of Serratia marcescens in the neonatal intensive care unit (NICU) of the University Hospital of Zurich. S. marcescens infection was detected in 4 children transferred from the NICU to the University Children's Hospital (Zurich).