Viral Host Range database, a resource for virus-host interactions studies

How do I search for the host of a virus? If answering this question is trivial for some human pathogenic viruses, it is more puzzling for viruses in general. The Viral Host Range database (VHRdb) gives access to the experimental data to answer this question. The aim of the VHRdb is to provide to the community the data generated by scientists documenting the host range of their favorite virus through an easy (copy/paste) contribution process including benefits. Indeed, VHRdb integrates analysis tools to compare experimental datasets in many ways. Searching for the host range of a virus, or the other way around has never been easier!

By sharing host range tests published but yet not in a searchable format, you will give a new value to your work and prevent scientists to perform the same tests again and again.

When appropriate, please do not forget to cite our work.

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Recently updated data sources

Tests of CLB_P1, CLB_P2, CLB_P3 E. coli phages on the ECOR collection (From DEBARBIEUX Laurent, Oct. 10, 2023)
Host range tests performed by Damien Maura, PhD in Debarbieux lab. Technique: spotting phages on bacterial overlay (in exponential phase) on LB plates. CLB_ phages were isolated from sewage using Escherichia coli strain 55989 (serotype O104:H4) (NC_0117
Streptomyces phages (From HARDY Aël, Aug. 1, 2023)
This host-range assay was performed by Aël Hardy, a PhD student in the laboratory of Julia Frunzke (Forschungszentrum Jülich, The method used was spotting assay, with serial dilutions of the phage solutions being spotted on a ba
Host range of phages isolated from a smear-ripened cheese (From PAILLET Thomas, March 29, 2023)
The spot assay experiment was realised by T. Paillet in the SayFood lab. 5μL of a phage solution were spotted on a lawn of bacteria. The results were assessed visually by the presence of plaques. The phages and hosts tested were isolated by T. Paillet fro
11 Phages host range against 32 Phytopathogen Pseudomonas syringae pathovar phaseolicola and pathovar actinidiae (From MARTINO Gabriele, Jan. 13, 2022)
The experiment was realized by Gabriele Martino and Marina Ciuffo (, were originally isolated using Pseudomonas syringae pv. actinidiae (Psa) strain K7#8 and Pseudomonas syringae pv