Herpesviral infections

Herpesviral infections are caused by viruses in the Herpesviridae family, described in the source material as a large family of DNA viruses capable of infecting higher and lower vertebrates ^[1]. A defining feature is the ability to establish latency, in which the host cannot clear the virus from infected cells, resulting in persistent infection ^[2]. The sources also characterize herpesviruses as highly prevalent opportunistic pathogens, although the exact distribution varies by virus species and host context ^[3][2].

The source material describes herpesviral infections as causing a broad range of recurrent disease manifestations, including cold sores, shingles, congenital defects, and several malignancies ^[2]. It also notes that herpesviral infections can provoke an inflammatory cytokine response ^[4]. In addition, herpesvirus infection and reactivation have been discussed in relation to neuroinflammatory and neurodegenerative pathways, with reported associations involving amyloid-β production, tau phosphorylation, oxidative stress, and neuroinflammation in Alzheimer-related research ^[3]. Source-backed detail on the full clinical spectrum, severity distribution, and complication rates is not yet available.

The available sources indicate that herpesviruses are very common, with more than 90% of the adult population reported to be infected with one or multiple herpesviruses ^[2]. The family is described as widespread across higher and lower vertebrates, and research interest has been especially strong because of prevalence, pathogenicity, and economic losses in livestock ^[1]. One source also notes that reactivation may be particularly relevant in the elderly, but source-backed detail on age-specific burden, regional distribution, or outbreak patterns is not yet available ^[3].

The provided sources do not give a specific transmission route for herpesviral infections, so source-backed detail on direct mechanisms of spread is not yet available. The material does, however, emphasize latency and reactivation within infected hosts, indicating that persistence is central to the infection biology ^[2].

Source-backed risk groups are not comprehensively defined in the provided material. The sources specifically mention older adults in relation to herpesvirus reactivation and Alzheimer-related hypotheses, congenital defects as one disease outcome, and farm and companion animals as important hosts in veterinary contexts ^[3][2][1]. Beyond these groups and contexts, further source-backed detail is not yet available.

The sources suggest that prevention and control are constrained by latency, because antivirals may limit productive infection but do not clear latent infection ^[2]. A review on herpesviruses in farm and companion animals states that vaccines produced have generally been ineffective and do not prevent establishment of latency ^[1]. The Alzheimer-related review also notes that anti-herpesviral therapy was associated with reduced risk in a large population study, but it does not provide a general prevention schedule or public-health protocol ^[3].

In surveillance settings, herpesviral infections should be interpreted as a heterogeneous group of infections rather than a single uniform disease entity, because the family includes many species and disease presentations ^[1][2]. Monitoring should pay particular attention to recurrent disease, latent infection with later reactivation, and settings where burden may be amplified, such as older adults, congenital disease contexts, and animal health systems ^[3][2][1]. Source-backed detail on standardized case definitions or notification practices is not yet available.

1. 1 Herpesviral infections of farm and companion animals. Medycyna Weterynaryjna. 2018. doi: 10.21521/mw.5836. DOI: https://doi.org/10.21521/mw.5836
2. 2 van Diemen FR et al. CRISPR/Cas9, a powerful tool to target human herpesviruses. Cell Microbiol. 2017 Feb. PMID: 27860066. doi: 10.1111/cmi.12694. PubMed: https://pubmed.ncbi.nlm.nih.gov/27860066/
3. 3 Qin Q et al. Herpesviral infections and antimicrobial protection for Alzheimer's disease: Implications for prevention and treatment. J Med Virol. 2019 Aug. PMID: 30997676. doi: 10.1002/jmv.25481. PubMed: https://pubmed.ncbi.nlm.nih.gov/30997676/
4. 4 Cai MS et al. Herpesviral infection and Toll-like receptor 2. Protein Cell. 2012 Aug. PMID: 22865347. doi: 10.1007/s13238-012-2059-9. PubMed: https://pubmed.ncbi.nlm.nih.gov/22865347/
5. 5 Resistance and Susceptibility of Bovine Cells Expressing Herpesviral Glycoprotein D Homologs to Herpesviral Infections. Virology. 1993. doi: 10.1006/viro.1993.1269. DOI: https://doi.org/10.1006/viro.1993.1269
6. 6 Impact of different types of herpesviral infections in the oral cavity. World Journal of Stomatology. 2016. doi: 10.5321/wjs.v5.i2.22. DOI: https://doi.org/10.5321/wjs.v5.i2.22

ICD-10

B00

ICD-11

1E90

Total cases

2

Peak month

2019-11

Coverage

1 reporting countries · 2012-09-14 → 2026-06-20