in the seasonal-flu github repository, the vaccine.json file contains the selection dates , seasonal-flu/config/h3n2/vaccine.json at master · nextstrain/seasonal-flu · GitHub .
For this egg-based vaccine variant , the date in json is
"A/Darwin/9/2021-egg": {
"vaccine": {
"selection_date": "2022-09-23"
}
},
However according to info on Crick institute -WIC and WHO recommendation WHO website , this variant was recommended in 2021-09-24 , the same date as “A/Darwin/6/2021” . Was this a mistake or intentional change?