Influenza and Other Respiratory Viruses最新文献

We estimated COVID-19 vaccine effectiveness (VE) against PCR-confirmed SARS-CoV-2 hospitalization in patients ≥ 60 years with severe acute respiratory infection, using a multicenter, test-negative, case–control study across seven sites in six European countries between September 2024 and May 2025. We included 352 cases (115 vaccinated; 33%) and 9980 controls (5024 vaccinated; 50%). VE was 42% (95% CI: 15; 61) 14–59 days post-vaccination, 32% (95% CI: −1; 54) at 60–119 days, and 36% (95% CI: 2; 60) at 120–179 days, and no effect thereafter. Among adults aged 60–79 and ≥ 80 years, we observed moderate VE against COVID-19 hospitalization for up to 2 and 4 months, respectively.

A 2023 outbreak of highly pathogenic avian influenza in seabirds in Norway caused substantial environmental contamination of grazing areas frequented by local sheep. Eleven months later, 220 sheep were tested for antibodies to type A influenza and H5 subtype using ELISA, haemagglutination inhibition and microneutralisation assays. One ewe (0.5%) tested positive by all methods, consistent with prior spillover infection. This underscores the importance of restricting livestock access to outbreak areas to mitigate cross-species transmission and zoonotic risk.

We estimated the burden of influenza, SARS-CoV-2 and RSV from patients hospitalized with acute respiratory infection systematically tested between weeks 40/2024 and 20/2025 in Spain. The hospitalization rate per 100,000 was highest for influenza [67.5 (95% Confidence Interval: 52.5–87.3)] followed by RSV [46.6 (35.4–62.2)] and SARS-CoV-2 [15.8 (10.2–24.6)]. Hospitalization rates peaked in ≥ 60-year-olds and < 5-year-olds, ICU admissions in < 1-year-olds and deaths in ≥ 80-year-olds. Hospitalization for SARS-CoV-2 at 80–85 years was comparable to influenza at 60–65 years, potentially signaling the appropriateness of increasing the COVID-19 vaccination age cut-off. RSV prevention appeared a priority in < 5-year-olds but substantial preventive potential was identified in the elderly.

In 2009, the World Health Organization (WHO) developed a public health research agenda for influenza to guide researchers and outline directions and priority areas for research on influenza aiming at reducing the burden of seasonal epidemic influenza and the risk and impact of pandemic influenza. The agenda was updated in 2017, but since then, important research has been conducted, and major changes have occurred to the global health landscape impacted mainly by the COVID-19 pandemic. Therefore, there is a need to assess advances in zoonotic influenza surveillance methods reported between 2017 and 2024 in order to highlight key achievements and identify remaining gaps that limit their broader implementation, hence informing an update of the research agenda. We conducted a comprehensive literature review of zoonotic influenza surveillance and monitoring, focusing on novel and enhanced methodologies reported globally between 2017 and 2024. A systematic analysis was performed following PRISMA guidelines on 7490 peer-reviewed manuscripts from 2017 to 2024 retrieved from PubMed, of which 164 records were included in this review. Analysis of the information collected indicated several advances and gaps at different levels of surveillance and unmet public health needs. Most countries do not have active and comprehensive surveillance programs for zoonotic influenza at the human–animal interface, which underestimates the true burden of zoonotic influenza diseases. The review concludes with a set of high-priority research recommendations focused on filling gaps in One Health data integration, validation, and field deployment of novel diagnostic technologies, wider adoption of noninvasive and environmental surveillance approaches, and stronger linkage of methodological innovations to risk assessment and policy action. In light of the recent upsurge in H5N1 activity and cross-species transmission, the WHO has convened multiple R&D Blueprint consultations over the past year to prioritize research and development for H5N1 candidate vaccines, diagnostics, and pandemic preparedness. These ongoing initiatives underscore the critical importance of strengthening surveillance at the human–animal interface.