The WHO's recommended name for the virus that involved in its previous announced pandemic is "A(H1N1)pdm09", which literally stands for "pandemic disease Mexico 2009": https://www.who.int/influenza/gisrs_laboratory/terminology_a...
The name of this virus with respect to the naming convention mentioned above is literally "A/California/7/2009(H1N1)pdm", which you'll note has two specific places in it, one abbreviated and one not.
https://www.who.int/topics/infectious_diseases/naming-new-di...
Of course older diseases would not likely have their names changed.
For the Northern Hemisphere this flu season they recommend strains like A/Brisbane/02/2018(H1N1), A/Kansas/14/2017(H3N2), B/Colorado/06/2017, and B/Phuket/3073/2013.
The WHO advice applies to the common usage:
As these best practices only apply to disease names for common usage, they also do not affect the work of existing international authoritative bodies responsible for scientific taxonomy and nomenclature of microorganisms.
https://www.who.int/mediacentre/news/notes/2015/naming-new-d...
https://www.theguardian.com/environment/2020/feb/25/coronavi...
And it happened before, with SARS in 2003:
https://en.wikipedia.org/wiki/Severe_acute_respiratory_syndr...
You can go on and on and on with examples: https://en.wikipedia.org/wiki/Zika_virus https://en.wikipedia.org/wiki/California_encephalitis_orthob... https://en.wikipedia.org/wiki/La_Crosse_encephalitis https://en.wikipedia.org/wiki/Saint_Louis_encephalitis https://en.wikipedia.org/wiki/West_Nile_virus https://en.wikipedia.org/wiki/Zaire_ebolavirus https://en.wikipedia.org/wiki/Marburg_virus https://en.wikipedia.org/wiki/Borna_disease_virus https://en.wikipedia.org/wiki/Coxsackievirus https://en.wikipedia.org/wiki/Omsk_hemorrhagic_fever https://en.wikipedia.org/wiki/Langat_virus https://en.wikipedia.org/wiki/Kyasanur_Forest_disease https://en.wikipedia.org/wiki/Alkhurma_virus
https://www.who.int/topics/infectious_diseases/naming-new-di...
Of course older diseases would not likely have their names changed.
As these best practices only apply to disease names for common usage, they also do not affect the work of existing international authoritative bodies responsible for scientific taxonomy and nomenclature of microorganisms.
https://www.who.int/mediacentre/news/notes/2015/naming-new-d...