# Model Improvement

###### tags: `others`

## Time-dependent vaccine efficacy

#### reference
* https://www.nature.com/articles/s41467-021-24872-5

* https://www.mdpi.com/1660-4601/18/5/2497

* https://www.bbc.com/zhongwen/trad/science-58320233
* https://www.cdc.gov.tw/EpidemicTheme/Detail/HN_bvfRk6F9P3-V-G4NJxQ?archiveId=j7N_Kxkv9d-bLpUDdvygSg
* https://www.the-scientist.com/news-opinion/study-reveals-declining-covid-19-vaccine-efficacy-against-infection-69125
* https://nidss.cdc.gov.tw/nndss/disease?id=19CoV
* https://sites.google.com/cdc.gov.tw/2019ncov/taiwan?authuser=0
* https://pansci.asia/archives/333131

## Age-dependent vaccine efficacy

## Age-dependent Mortality rate

## Region-dependent

* https://www.science.org/doi/full/10.1126/sciadv.abj2099