Salmonella Typhimurium caused an unprecedentedly large foodborne outbreak in Finland in 2021.

AIMS: Salmonella infections are significant causes of foodborne outbreaks in the European Union. This study investigates a sudden increase in gastroenteritis patients in the hospital district of Central Finland in June 2021. The primary aim was to study the outbreak's magnitude and source of the outbreak. METHODS AND RESULTS: Epidemiological, microbiological, environmental and traceback investigations were conducted. Over 700 persons fell ill during the outbreak caused by Salmonella Typhimurium associated with a daycare lunch. Similar S. Typhimurium was found in the patients and a vegetable mix containing iceberg lettuce, cucumber and peas served during lunch. The traceback investigation revealed that the batch information of vegetables from the wholesaler was not complete. The wholesaler had received quality complaints about the iceberg lettuce from the central kitchen. The manufacturer did not test the suspected batch for Salmonella since the production plant had given a certificate declaring it Salmonella negative. CONCLUSIONS: The most suspect ingredient was one batch of iceberg lettuce due to quality complaints. The lettuce had not been served in two daycare centres without cases. We recommend that in order to enable thorough microbiological investigation, institutional kitchens store the food samples separately as part of the internal quality control and that food items should always be tested when Salmonella contamination in an outbreak is suspected.

COVID-19 vaccination among health care workers in Finland: coverage, perceptions and attitudes.

AIMS: In this study, we examined the voluntary COVID-19 vaccine coverage among health care workers (HCWs) working in close patient contact. HCWs' beliefs about COVID-19 infection, their opinions of vaccination and reasons for having or declining the COVID-19 vaccination were also evaluated. METHODS: In October 2021, a cross-sectional observational study was carried out in five hospitals in Central and Eastern Finland. The anonymous and voluntary survey was targeted at 5120 doctors and nurses working in close patient contact. RESULTS: Some 1837 responses were included in the study. Ninety-seven per cent of the respondents had received at least one COVID-19 vaccine and 68% of the respondents agreed that all HCWs working in close patient contact should be vaccinated against COVID-19. Vaccination coverage and support for vaccination were higher among older HCWs and doctors. HCWs' main reasons for having the COVID vaccine were willingness to protect themselves, their family and their patients from COVID-19. Concerns about adverse reactions to the COVID-19 vaccine was the main reason for declining it. CONCLUSIONS: The overall COVID-19 vaccination coverage and support for vaccinations among HCWs working in close patient contact were high without actual mandatory policies being introduced. Prioritising HCWs for COVID-19 vaccinations and widespread vaccine availability, as well as low general vaccine hesitancy and high seasonal influenza vaccination coverage among the study population were check marks in achieving high COVID-19 vaccination coverage rapidly.

Intrahost Monkeypox Virus Genome Variation in Patient with Early Infection, Finland, 2022.

Monkeypox virus was imported into Finland during late May-early June 2022. Intrahost viral genome variation in a sample from 1 patient comprised a major variant with 3 lineage B.1.3-specific mutations and a minor variant with ancestral B.1 nucleotides. Results suggest either ongoing APOBEC3 enzyme-mediated evolution or co-infection.

Clinical characteristics and evaluation of the incidence of cryptococcosis in Finland 2004-2018.

BACKGROUND: Cryptococcosis is one of the major causes of mortality among HIV patients worldwide. Though most often associated with late stage HIV infection/AIDS, a significant number of cases occur in other immunocompromised patients such as solid organ transplant recipients and patients with hematological malignancies. Immunocompromised patients are a heterogeneous group and their number increases constantly. Since little is known about the incidence and the clinical features of cryptococcosis in Northern Europe, our aim was to investigate the clinical characteristics of cryptococcosis patients in Finland. METHODS: We retrospectively reviewed the laboratory confirmed cryptococcosis cases in Finland during 2004-2018. Only those who were treated for cryptococcosis were included in the study. Initial laboratory findings and medical records were also collected. RESULTS: A total of 22 patients with cryptococcosis were included in our study. The annual incidence of cryptococcosis was 0.03 cases per 100,000 population. Ten patients were HIV-positive and 12 out of 22 were HIV-negative. Hematological malignancy was the most common underlying condition among HIV-negative patients. CONCLUSIONS: To our knowledge, this is the first study of the clinical presentation and incidence of cryptococcosis in Finland. We demonstrate that invasive cryptococcal infection occurs not only in HIV/AIDS patients or otherwise immunocompromised patients but also in immunocompetent individuals. Even though cryptococcosis is extremely rare in Finland, its recognition is important since the prognosis depends on rapid diagnostics and early antifungal therapy.