Results 51 to 60 of about 4,475 (152)

Emergence and Rapid Spread of a New Reassortant High Pathogenicity H5N1 Clade 2.3.4.4b Avian Influenza Virus in Nigeria

open access: yesInfluenza and Other Respiratory Viruses, Volume 20, Issue 5, May 2026.
ABSTRACT Over the past two decades, West Africa has experienced recurrent incursions of Goose/Guangdong‐lineage highly pathogenic avian influenza (HPAI) A(H5N1), with Nigeria as a hotspot for repeated introductions and sustained circulation. Since 2021, European‐origin clade 2.3.4.4b H5Nx genotypes, particularly EA‐2020‐C, have predominated in regional
Clement Meseko   +14 more
wiley   +1 more source

Reconstructing the Dissemination Dynamics of the Major HIV-1 Subtype B Non-Pandemic Lineage Circulating in Brazil

open access: yesViruses, 2019
Non-pandemic variants of the Human Immunodeficiency Virus Type 1 (HIV-1) subtype B accounts for a significant fraction of HIV infections in several Caribbean islands, Northeastern South American countries and the Northern Brazilian states of Roraima and ...
Ighor Arantes   +4 more
doaj   +1 more source

Fitting stochastic epidemic models to gene genealogies using linear noise approximation [PDF]

open access: yes, 2019
Phylodynamics is a set of population genetics tools that aim at reconstructing demographic history of a population based on molecular sequences of individuals sampled from the population of interest.
Bedford, Trevor   +3 more
core   +1 more source

e3SIM: Epidemiological‐ecological‐evolutionary simulation framework for genomic epidemiology

open access: yesMethods in Ecology and Evolution, Volume 17, Issue 4, Page 1051-1059, April 2026.
Abstract Infectious disease dynamics result from the complex interplay of epidemiological, ecological and evolutionary (epi‐eco‐evo) processes. Accurately modelling these coupled processes is crucial for understanding pathogen spread and informing public health strategies.
Peiyu Xu   +14 more
wiley   +1 more source

Genomic epidemiology sheds light on the emergence and spread of Mycobacterium bovis Eu2 Clonal Complex in Portugal

open access: yesEmerging Microbes and Infections, 2023
Animal tuberculosis (TB) remains a serious concern for animal and human health. Mycobacterium bovis circulates in multi-host systems, dominated by the European 2 clonal complex (Eu2) in Iberia.
André C. Pereira   +2 more
doaj   +1 more source

Scientists' Warning on the Rapid Evolution of Parasites in the Anthropocene

open access: yesEvolutionary Applications, Volume 19, Issue 4, April 2026.
ABSTRACT Human activities are changing the natural world at an accelerating pace, and as a consequence exerting novel and often strong selection pressures on living organisms. For species with traits conferring huge inherent evolutionary potential, like parasites, the outcome may be rapid adaptive responses spanning multiple phenotypic traits. The rise
Robert Poulin   +30 more
wiley   +1 more source

Sampling through time and phylodynamic inference with coalescent and birth-death models

open access: yes, 2014
Many population genetic models have been developed for the purpose of inferring population size and growth rates from random samples of genetic data. We examine two popular approaches to this problem, the coalescent and the birth-death-sampling model, in
Frost, Simon DW, Volz, Erik M.
core   +1 more source

Understanding past population dynamics: Bayesian coalescent-based modeling with covariates [PDF]

open access: yes, 2016
Effective population size characterizes the genetic variability in a population and is a parameter of paramount importance in population genetics. Kingman's coalescent process enables inference of past population dynamics directly from molecular sequence
Bennett, Shannon N.   +4 more
core   +2 more sources

The evolutionary landscape and serotypic dynamics of avian infectious bronchitis virus from spike protein

open access: yesiMetaOmics, Volume 3, Issue 1, March 2026.
This study integrates two decades of surveillance with genomic and structural analyses to decipher how spike protein glycosylation haplotypes drive avian coronavirus evolution. We uncover how specific glycosylation patterns associate with receptor‐binding affinity, shape global transmission dynamics, and correlate with clinical outcomes.
Hao Zhang   +21 more
wiley   +1 more source

Molecular characterization of the meq oncogene of Marek’s disease virus in vaccinated Brazilian poultry farms reveals selective pressure on prevalent strains

open access: yesVeterinary Quarterly
Marek’s disease virus (MDV) has become an increasingly virulent pathogen in the poultry industry despite vaccination efforts to control it. Brazil has experienced a significant rise of Marek’s disease (MD) outbreaks in recent years.
Ruy D. Chacón   +8 more
doaj   +1 more source

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