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Virological plaque assay is the major method of detecting and quantifying infectious viruses in research and diagnostic samples. Furthermore, viral plaque phenotypes contain information about the life cycle and spreading mechanism of the virus forming them. While some modernisations have been proposed, the conventional assay typically involves manual quantification of plaque phenotypes, which is both laborious and time-consuming. Here, we present an annotated dataset of digital photographs of plaque assay plates of Vaccinia virus - a prototypic propoxvirus. We demonstrate how analysis of these plates can be performed using deep learning by training models based on the leading architecture for biomedical instance segmentation - StarDist. Finally, we show that the entire analysis can be achieved in a single step by HydraStarDist - the modified architecture we propose.
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http://dx.doi.org/10.1038/s41597-025-05030-8 | DOI Listing |
Eur J Clin Microbiol Infect Dis
September 2025
Department of Infectious and Tropical Diseases, Toulouse University Hospital, Toulouse, 31059 Cedex 9, France.
Purpose: This narrative review aims to provide an overview of current knowledge on mpox, emphasizing updated epidemiology and recent advances in treatment and prevention strategies, in light of the latest outbreaks.
Methods: We searched PubMed and Google Scholar for publications on 'Mpox' and 'Monkeypox' up to June 5, 2025. Grey literature from governmental and health agencies was also accessed for outbreak reports and guidelines where published evidence was unavailable.
EMBO Mol Med
September 2025
Institute of Physical Science and Information, Anhui University, 230039, Hefei, Anhui, China.
The global outbreak of the mpox in humans, caused by the mpox virus (MPXV), underscores the urgent need for safe and effective therapeutics. In this study, we characterized the dominant MPXV immunogens, M1R and B6R, by sequencing monoclonal antibodies (MAbs) from the immunized mice and analyzing their epitopes and functions through in vitro and in vivo assessments of binding and antiviral activities. Several broadly effective anti-M1R and anti-B6R neutralizing MAbs were identified and they exhibited enhanced antiviral effects against MPXV or vaccinia virus (VACV) when used in antibody cocktail and bispecific antibody designs.
View Article and Find Full Text PDFVirology
August 2025
Department of Marine Biosciences, Tokyo University of Marine Science and Technology, Tokyo, 108-8477, Japan; Institute for Aquaculture Biotechnology (IAB), Tokyo University of Marine Science and Technology, Tokyo, 108-8477, Japan. Electronic address:
Atypical cellular gill disease (ACGD) in ayu (Plecoglossus altivelis) caused by P. altivelis poxvirus (PaPV) infection has led to significant economic losses in Japanese aquaculture. The propagation of PaPV has not yet been successfully achieved in cultured cells.
View Article and Find Full Text PDFAntiviral Res
September 2025
Setor de Virologia, Departamento de Medicina Veterinária Preventiva, Universidade Federal de Santa Maria, Brazil; Programa de Pós-graduação em Medicina Veterinária, Departamento de Medicina Veterinária Preventiva, Universidade Federal de Santa Maria, Brazil. Electronic address: eduardofurtadof
In this context, we evaluated the photodynamic effects of four cationic tetra-(pyridyl)porphyrins against Vaccinia virus Western Reserve (VACV WR) and Monkeypox virus (MPXV). The porphyrins were initially analyzed for cytotoxicity to Vero cells by MTT assay and the maximal non-cytotoxic concentrations were used in virucidal assays. For virucidal assays, VACV-WR (107.
View Article and Find Full Text PDFPLoS Med
September 2025
Saw Swee Hock School of Public Health, National University of Singapore and National University Health System, Singapore, Singapore.
Background: Limited mpox vaccination coverage, declining cross-protection from historical smallpox vaccination campaigns, and persistent zoonotic reservoirs leave many sub-Saharan countries susceptible to mpox outbreaks. With millions of vaccine doses made available to the region since late 2024 and the absence of country-specific guidelines for allocation, estimating the country-specific impact of one-time mass vaccination strategies is necessary for ongoing outbreaks and other countries at future risk.
Methods And Findings: We adapted a next generation matrix model to project disease transmission potential for 47 sub-Saharan countries from 2025 to 2050 under four transmission scenarios with different contributions of community versus sexual contacts.