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the claim

People vaccinated against chickenpox have a lower risk of developing shingles than people who had natural chickenpox infection.

the verdict
CONTESTED PARTIAL
Recorded sources
1 source for · 2 against

Counts group repeated records of the same source within each side. They do not measure evidence strength or source independence.

Is it true that people vaccinated against chickenpox have a lower risk of developing shingles than people who had natural chickenpox infection?

Partly. The CDC states that children vaccinated against varicella have lower rates of shingles than children who had natural chickenpox, but this covers only children. Other sources raise the concern that chickenpox vaccination could increase shingles in older or later cohorts, and one notes the vaccine itself can cause latent infection and later shingles, so the evidence is partial and points in both directions.

Verdict: CONTESTED PARTIAL · 1 source for, 2 against · Last checked

The private library was unavailable for some searches in this check. Missing library results are not evidence against the claim.

Evidence for · 1
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Clinical Overview of Shingles (Herpes Zoster) | Shingles (Herpes Zoster) | CDC. (n.d.). cdc.gov. https://www.cdc.gov/shingles/hcp/clinical-overview/index.html

Evidence against · 2
2006
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Welsby, P. D. (2006). Chickenpox, chickenpox vaccination, and shingles. doi.org. https://doi.org/10.1136/pgmj.2005.038984

2 recorded entries grouped as this source

Additional records of the same source are shown below. They are not counted as additional sources.

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Chickenpox, chickenpox vaccination, and shingles - PMC Lock. (n.d.). pmc.ncbi.nlm.nih.gov. https://doi.org/10.1136/pgmj.2005.038984

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More against · 1
2018
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Schmader, K. (2018). Herpes Zoster. doi.org. https://doi.org/10.7326/AITC201808070

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