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COVID vaccination accelerates after a slow start, including US and Japanese doses

In mid-2021 Taiwan’s COVID vaccination accelerated after a slow start, including US and Japanese donated doses, under Tsai’s second term. She did not write a Pfizer contract from 2020. In the causal graph this event strengthens Vaccine Accessibility, a driver that strengthens First-dose measles vaccination coverage (global, MCV1) — an improving welfare path.

Sources: [1][2]

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In mid-2021 Taiwan’s COVID vaccination accelerated after a slow start, including US and Japanese donated doses, under Tsai’s second term.

Context

CDC implements. She did not write a Pfizer contract from 2020. A catch-up is still a dated health instrument after a delay.

2022 wave is later.

The president of the Republic of China (Taiwan) is head of state under the Additional Articles. She does not write a PRC statute, a US NDAA, a TSMC board minute, or a 2026 Lai cabinet order. She left office on 20 May 2024; Lai Ching-te is president. A blackout is not a finding that every reactor was thereby safe. A Pelosi transit is not a PRC missile. Allegation of a stolen 2018 referendum is not stored as a completed steal. An indigenous apology is not a land-title gazette. A New Southbound brand is not an FTA by itself. A 2024 LY split is not a finding that the 2020 mandate was void.

Why it matters

The path is vaccine accessibility: a completed catch-up raises coverage after a delay, with US/Japan donations as shared files.

Who was responsible

Contribution type and responsibility level for each recorded actor — not sole-author shorthand.

  • Tsai Ing-wen

    Person

    Direct responsibility

    responsibility level 0.45 · verified

    She backed the catch-up. CDC injected. US and Japan donated some doses. Manufacturers supplied.

What changed

Fact → Driver → Indicator. Relationship strength orders the paths; it is not the observed indicator movement.

    1. FactCOVID vaccination accelerates after a slow start, including US and Japanese doses
    2. strengthensDriverVaccine Accessibility
    3. strengthensIndicators (2)First-dose measles vaccination coverage (global, MCV1)
    Improving path

    impact weight 0.45 · Effect from 18 June 2021 · verified

    A completed catch-up raises COVID-19 vaccine access after a delay.

    • First-dose measles vaccination coverage (global, MCV1)

      via Vaccine Accessibility

      Better

      Strengthens · Relationship strength 0.39 (weight 0.45 × strength 0.86)

      Observed

      84% of one-year-olds · 11 below the normal line (2024)

      Worse than normal

      7 readings, 2018–2024: fell from 86.4% of one-year-olds to 84% of one-year-olds.

      Above normal = better

    • Under-five mortality rate (global)

      via Vaccine Accessibility

      Better

      Weakens · Relationship strength 0.33 (weight 0.45 × strength 0.73)

      Observed

      37.4 deaths per 1,000 live births · 12.4 above the normal line (2024)

      Worse than normal

      7 readings, 2018–2024: fell from 40 deaths per 1,000 live births to 37.4 deaths per 1,000 live births.

      Above normal = worse

Evidence

The sources behind this fact and its verification state.

Verified2 sources on file
  1. 1.Reuters — Taiwan vaccination accelerates after slow startReuters · High credibility · verified
  2. 2.Taiwan CDC — COVID-19 border and mask measures, 2020–21Taiwan CDC · High credibility · verified
What the sources establish

Taiwan CDC carries the official instrument or communique. Reuters records the same dated act independently.

Established: mid-2021 vaccination acceleration under her second term, independently reported.

Not established: that the slow start was solely her authorship, or a unique later death coefficient from June.

CDC injected. US and Japan donated some doses. Manufacturers supplied.. A later repeal, court stay, or successor order would be a different Fact with a different date. That pair identifies COVID vaccination accelerates after a slow start, including US and Japanese doses, not a later speech about COVID vaccination accelerates after a slow start, including US and Japanese doses.

Co-authors and later implementers named in Context remain on the file. If a later repeal, stay, or successor instrument exists, it needs its own date and its own row. The contribution described on this Person row is limited to She backed the catch-up. CDC injected. US and Japan donated some doses. Manufacturers supplied. That limit is the alternative to treating office-holding as authorship of every later series.

Causal path

How this event connects to drivers and indicators in the graph.

  1. ActorTsai Ing-wen
  2. contributed toFactCOVID vaccination accelerates after a slow start, including US and Japanese doses
  3. strengthensDriverVaccine Accessibility
  4. strengthensIndicatorFirst-dose measles vaccination coverage (global, MCV1)

Cite this page

Factrail. (2026). COVID vaccination accelerates after a slow start, including US and Japanese doses. Factrail. https://factrail.ai/facts/tw-tsai-vaccine-2021

https://factrail.ai/facts/tw-tsai-vaccine-2021

Accessed 15 October 2026.

By the Factrail desk · Method: how we source and score · Last reviewed

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