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Comparative Analysis of COVID-19 Responses in Japan and Africa: Diet, Phytochemicals, Vitamin D, and Gut Microbiota in Reducing Mortality - A Systematic Review/Meta-Analysis

Systematic review/Meta-analysis of COVID response in Africa and Japan: from the viewpoint of nutritional difference. - COVID response in Africa and Japan in nutritional difference: systematic review/meta-analysis

Status
Active, not recruiting
Phases
Unknown
Study type
Unknown
Source
JPRN
Registry ID
JPRN-UMIN000054334
Enrollment
Unknown
Registered
2024-05-08
Start date
2024-05-08
Completion date
Unknown
Last updated
2026-06-29

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

COVID-19

Interventions

None listed

Sponsors

Nagasaki University
Lead Sponsor

Eligibility

Sex/Gender
All

Inclusion criteria

Inclusion criteria: Combined keywords (COVID), (polyphenol or flavonoids), (vitamin D), (gut microbiota) were searched on PubMed.

Exclusion criteria

Exclusion criteria: Articles other than Randomised Clinical Trials (RCTs) were excluded.

Design outcomes

Primary

MeasureTime frame
Evaluate the factors associated with the reduction of COVID-19 death.—

Countries

Japan

Contacts

Public ContactRaita Tamaki

Nagasaki University Institute of Tropical Medicine

tamakir@nagasaki-u.ac.jp+81-95-819-7800

Outcome results

None listed

Source: JPRN (via WHO ICTRP) · Data processed: Jul 3, 2026