Evidence map›Paper›PMID 25172869›Full record

ArticleApplied and environmental microbiology2014

PCR and culture identification of pathogenic Leptospira spp. from coastal soil in Leyte, Philippines, after a storm surge during Super Typhoon Haiyan (Yolanda).

Mitsumasa Saito, Satoshi Miyahara, Sharon Y A M Villanueva, Natsumi Aramaki, Mami Ikejiri, Yoshie Kobayashi, Jonathan P Guevarra, Toshiyuki Masuzawa, Nina G Gloriani, Yasutake Yanagihara and 1 more

Open access · bronzeAbstract read
In one paragraph

Article in Applied and environmental microbiology, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 28 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
28citing papers in PubMed, 1 pooled it
3.8field-weighted citation impact, top 7% 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

28 citing papers in PubMed, 1 synthesis or guideline pooled it, 58 citations in OpenAlex.

  1. Pooled it
  2. Review
  3. Leptospira licerasiae, a zoonotic pathogen isolated from water sources in Santa Maria, Rio Grande do Sul, Brazil.Brazilian journal of microbiology : [publication of the Brazilian Society for Microbiology] · 2025
    Article
  4. Article
  5. Article
  6. Review
  7. Article
  8. Article
  9. Microbiology spectrum · 2022
    Article
  10. Article
  11. Effect of Sewerage on the Contamination of Soil with PathogenicEnvironmental science & technology · 2021
    Article
  12. Article
  13. Leptospirosis and Coinfection: Should We Be Concerned?International journal of environmental research and public health · 2021
    Review
  14. Potentially PathogenicTropical medicine and infectious disease · 2020
    Article
  15. Article
  16. Article
  17. Article
  18. Article
  19. Article
  20. Identification ofPathogens and global health · 2019
    Article
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

11 authors at 3 institutions in 2 countries.

Mitsumasa SaitoDepartment of Bacteriology, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan msaito@bact.med.kyushu-u.ac.jp.
Satoshi MiyaharaDepartment of Bacteriology, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan.
Sharon Y A M VillanuevaDepartment of Bacteriology, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan.
Natsumi AramakiDepartment of Bacteriology, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan.
Mami IkejiriDepartment of Bacteriology, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan.
Yoshie KobayashiLEPCON Project Office, College of Public Health, University of the Philippines-Manila, Ermita, Manila, Philippines.
Jonathan P GuevarraDepartment of Health Promotion and Education, College of Public Health, University of the Philippines-Manila, Ermita, Manila, Philippines.
Toshiyuki MasuzawaLaboratory of Microbiology and Immunology, Faculty of Pharmaceutical Sciences, Chiba Institute of Science, Choshi, Chiba, Japan.
Nina G GlorianiDepartment of Medical Microbiology, College of Public Health, University of the Philippines-Manila, Ermita, Manila, Philippines.
Yasutake YanagiharaDepartment of Medical Microbiology, College of Public Health, University of the Philippines-Manila, Ermita, Manila, Philippines Laboratory of Microbiology and Immunology, Faculty of Pharmaceutical Sciences, Chiba Institute of Science, Choshi, Chiba, Japan.
Shin-ichi YoshidaDepartment of Bacteriology, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan.
Kyushu University · JPUniversity of the Philippines Manila · PHChiba Institute of Science · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Leptospirosis is a zoonosis caused by pathogenic Leptospira spp. Most of the outbreaks of leptospirosis occur after floods caused by heavy rain in countries where Leptospira spp. are endemic. It has been believed that the overflow of seawater rarely causes outbreaks of leptospirosis because the leptospires are killed by salt water. On 8 November 2013, a storm surge caused by Super Typhoon Haiyan (Yolanda) inundated the entire coastal areas of Tacloban and Palo in Leyte, Philippines. The present study was carried out in order to determine whether the environmental leptospires in soil were able to survive after the storm surge in the affected areas. We collected 23 wet soil samples along the coastal areas of Tacloban and Palo 2 months after the storm surge. The samples were suspended in HEPES buffer, and the supernatants were cultured in liquid or semisolid Korthof's medium supplemented with five antimicrobial agents to inhibit the growth of contaminants. Leptospires were isolated from primary cultures of 22 out of 23 samples. The DNA of pathogenic Leptospira species was detected in 11 samples (47.8%) by analysis of flaB by nested PCR. Eventually, two pathogenic Leptospira strains were isolated and showed the highest 16S rRNA gene sequence similarity to Leptospira kmetyi. When these isolates were experimentally mixed with soil, they were found to survive in seawater for 4 days. These results show the possibility that leptospires living in soil survived after the storm surge. Our findings may serve as a warning that when seawater inundates the land during a storm surge or a tsunami, an outbreak of leptospirosis could occur in the disaster-stricken area.

Indexed as

Soil MicrobiologyCyclonic StormsDisastersHumansLeptospiraLeptospirosisPhilippinesPolymerase Chain Reaction

Identifiers

PMID25172869
PMCPMC4248998
OpenAlexW2000175494

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.