Bovine Viral Diarrhea Virus Epidemiology and Control
Summary
Bovine viral diarrhea virus (BVDV) remains a pervasive pathogen of cattle worldwide, causing a spectrum of disease from subclinical infection to severe mucosal disease. Two species, BVDV-1 and BVDV-2, display extensive genetic diversity and circulate in both acute and persistent forms. Persistently infected (PI) animals, infected in utero, serve as efficient reservoirs, shedding virus lifelong and perpetuating herd-level transmission. Transient infection of naïve cattle contributes to viral dissemination, while inapparent carriers complicate detection. Serological surveys reveal variable seroprevalence across regions, reflecting differences in control strategies and biosecurity standards. Economic losses arise from reduced fertility, elevated calf mortality and trade restrictions. Control hinges on systematic identification and removal of PI animals, stringent biosecurity, movement controls and targeted vaccination. A range of vaccines—modified live, inactivated and emerging subunit formulations—aim to elicit protective systemic and mucosal immunity. Surveillance employs bulk tank milk testing, individual serology and molecular assays, enabling early outbreak detection. Eradication programmes, implemented successfully in several European countries, combine compulsory testing, culling of PI cattle and optional vaccination, yielding marked reductions in national prevalence. Future efforts focus on refining diagnostic sensitivity, optimising vaccine delivery to induce robust mucosal defences and integrating economic modelling to sustain freedom from infection in post-eradication settings.
Research from Nature Portfolio
A comprehensive meta-analysis of global BVDV studies aggregated data from over six million cattle and more than 300,000 herds, quantifying regional prevalences of PI animals, viraemic cases and antibody-positive herds. This work demonstrated declining PI rates in Europe following control programmes, contrasted by rising prevalence in regions without systematic eradication efforts. The findings underscore the importance of standardised epidemiological reporting and harmonised surveillance protocols to inform policy decisions and benchmark progress towards BVDV freedom.
Bovine Viral Diarrhea Virus Epidemiology and Control publication trend
The graph below shows the total number of articles in bovine viral diarrhea virus epidemiology and control across all publications each year (not limited to Nature Index journals).
Technical terms
Persistently infected (PI) animal: An animal infected in utero that harbours and sheds virus continuously without mounting an effective immune response.
Seroprevalence: The proportion of animals in a population with detectable antibodies against a specific pathogen, indicating past exposure or vaccination.
Bulk tank milk (BTM) testing: Screening pooled milk samples from a herd to detect antibodies or antigen, enabling herd-level surveillance.
Subunit vaccine: A vaccine comprising selected viral proteins or peptides rather than whole inactivated or live-attenuated virus.
Mucosal immunity: Immune responses, including secretory IgA and tissue-resident lymphocytes, operating at mucosal surfaces to prevent pathogen entry.
Reverse transcription polymerase chain reaction (RT-PCR): A molecular technique converting viral RNA into DNA and amplifying specific sequences for sensitive detection of infection.
Meta-analysis: A statistical method that combines results from multiple independent studies to derive pooled estimates of effect or prevalence.
References
- Evaluating the effectiveness & costs of strategies post-eradication to monitor for freedom from BVDV infection in Ireland. Agricultural Systems (2024).
- Evaluation of the Mucosal Immunity Effect of Bovine Viral Diarrhea Virus Subunit Vaccine E2Fc and E2Ft. International Journal of Molecular Sciences (2023).
- Diagnosis of bovine viral diarrhea virus: an overview of currently available methods. Frontiers in Microbiology (2024).
- A meta-analysis of bovine viral diarrhoea virus (BVDV) prevalences in the global cattle population. Scientific Reports (2018).
- Control of Bovine Viral Diarrhea. Pathogens (2018).
- Variability and Global Distribution of Subgenotypes of Bovine Viral Diarrhea Virus. Viruses (2017).
About these summaries
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