Evidence map›Paper›PMID 33662346›Full record

ArticleEnvironmental research2021

Copper-impregnated three-layer mask efficiently inactivates SARS-CoV2.

Chamith Hewawaduge, Amal Senevirathne, Vijayakumar Jawalagatti, Jang Whan Kim, John Hwa Lee

Open access · greenAbstract read
In one paragraph

Article in Environmental research, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 30 papers.

0numbers the graph read from it
0cells of the map it votes in
30citing papers in PubMed
9.2field-weighted citation impact, top 1% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

30 citing papers in PubMed, 68 citations in OpenAlex.

  1. Review
  2. Engineering copper and copper-based materials for a post-antibiotic era.Frontiers in bioengineering and biotechnology · 2025
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  11. Passive antifouling and active self-disinfecting antiviral surfaces.Chemical engineering journal (Lausanne, Switzerland : 1996) · 2022
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

5 authors at 1 institution in 1 country.

Chamith HewawadugeCollege of Veterinary Medicine and Korea Zoonosis Research Institute, Jeonbuk National University, Iksan Campus, 54596, Iksan, Republic of Korea.
Amal SenevirathneCollege of Veterinary Medicine and Korea Zoonosis Research Institute, Jeonbuk National University, Iksan Campus, 54596, Iksan, Republic of Korea.
Vijayakumar JawalagattiCollege of Veterinary Medicine and Korea Zoonosis Research Institute, Jeonbuk National University, Iksan Campus, 54596, Iksan, Republic of Korea.
Jang Whan KimLSK Finetex Co., Ltd, Goyang-Si, Gyeonggi-Do, Republic of Korea.
John Hwa LeeCollege of Veterinary Medicine and Korea Zoonosis Research Institute, Jeonbuk National University, Iksan Campus, 54596, Iksan, Republic of Korea. Electronic address: johnhlee@jbnu.ac.kr.
Jeonbuk National University · KR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The present study investigates the potential of SARS-CoV-2 inactivation by a copper sulfide (CuS) incorporated three-layer mask design. The mask consisted of the outer, middle, and inner layers to give comfort, strength, shape, and safety. The outer layer contained a total of 4.4% CuS (w/w) (2.2% CuS coated & 2.2% CuS impregnated) nylon fibers and the middle entrapment area contain a total of 17.6% CuS (w/w) impregnated nylon. No CuS was present in the inner layer. The antiviral efficacy assessment revealed, CuS incorporated mask is highly effective in inactivating SARS-CoV-2 within 30 min exposure. After, 1h and 2 h exposure, near-complete elimination of virus were observed by cytopathy, fluorescence, and viral copy number. The antiviral activity of the mask material was derived by incorporated solid-state CuS. Noticeably, the antiviral activity of CuS against SARS-CoV-2 was in the form of solid-state CuS, but not as Cu

Indexed as

CopperCOVID-19HumansPandemicsRNA, ViralSARS-CoV-2CopperRNA, ViralCopper maskCopper sulfideCopy numberCytopathyFluorescenceSARS-CoV-2Three-layer mask

Identifiers

PMID33662346
PMCPMC7919544
OpenAlexW3135104937

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.