Remember this:

What percent of COVID‑19 deaths were among vaccinated people (late 2021 onward)?

⭐ By late 2021:

About 30% of adults dying of COVID‑19 were vaccinated or boosted KFF.

⭐ By early 2022:

Around 40% of COVID‑19 deaths were among vaccinated or boosted adults KFF.

⭐ By April 2022 through at least August 2022:

Roughly 60% of COVID‑19 deaths were among vaccinated or boosted adults KFF.

This is the most precise, CDC‑based estimate available for the period after vaccines were widely accessible.

Why did the share of vaccinated deaths rise?

KFF’s analysis (based on CDC data) explains several drivers KFF:

• Most older adults were vaccinated, so the pool of unvaccinated people shrank.
• Waning immunity without boosters increased vulnerability.
• Low booster uptake among high‑risk groups.
• New variants and reduced masking increased exposure.
• Vaccinated people tend to be older, and age remains the strongest risk factor for death.

This does not mean vaccines stopped working — only that the composition of the population changed.

What about 2023–2024?

The CDC stopped publishing detailed vaccination‑status mortality tables in 2023.

However, the pattern from late 2022 likely continued:

• High vaccination rates among older adults
• Waning immunity
• Low booster uptake
• Fewer unvaccinated people remaining

These factors tend to push the share of vaccinated deaths upward even when absolute death rates among vaccinated people remain far lower than among the unvaccinated.

Bottom line

From late 2021 onward:

• 30% of COVID‑19 deaths were vaccinated (late 2021)
• 40% by January 2022
• ~60% from April–August 2022

All based on CDC data summarized by KFF KFF.