Evidence map›Paper›PMID 40950599›Full record

ArticleFrontiers in microbiology2025

A longitudinal molecular surveillance of genetic heterogeneity of

Krishan Kumar Sihag, Waseema Arif, Srikanth Srirama, Anand Kumar Chandrasekaran, Vinod Raveendran, Asayas Bosco Chandrakumar, Anand Kasirajan, Sivagamy Alias Punitha Thavaraj, Lakshmy Srinivasan, Anoop C Choolayil and 4 more

Abstract read
In one paragraph

Article in Frontiers in microbiology, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.

0numbers the graph read from it
0cells of the map it votes in
1citing papers in PubMed
–field-weighted citation impact
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

1 citing paper in PubMed.

  1. A Compact Closed Genome ofPathogens (Basel, Switzerland) · 2026
    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

14 authors.

Krishan Kumar SihagUnit of One Health, ICMR-Vector Control Research Centre (ICMR-VCRC), Indira Nagar, Puducherry, India.
Waseema ArifUnit of One Health, ICMR-Vector Control Research Centre (ICMR-VCRC), Indira Nagar, Puducherry, India.
Srikanth SriramaUnit of One Health, ICMR-Vector Control Research Centre (ICMR-VCRC), Indira Nagar, Puducherry, India.
Anand Kumar ChandrasekaranIndira Gandhi Medical College and Research Institute, Kathirkamam, Puducherry, India.
Vinod RaveendranSri Venkateshwaraa Medical College Hospital and Research Centre, Ariyur, Puducherry, India.
Asayas Bosco ChandrakumarSri Lakshmi Narayana Institute of Medical Science, Villianur, Puducherry, India.
Anand KasirajanMahatma Gandhi Medical Advance Research Institute, Sri Balaji Vidyapeeth, Pilayarkuppam, Puducherry, India.
Sivagamy Alias Punitha ThavarajICMR-Vector Control Research Centre (ICMR-VCRC), Indira Nagar, Puducherry, India.
Lakshmy SrinivasanUnit of One Health, ICMR-Vector Control Research Centre (ICMR-VCRC), Indira Nagar, Puducherry, India.
Anoop C ChoolayilUnit of One Health, ICMR-Vector Control Research Centre (ICMR-VCRC), Indira Nagar, Puducherry, India.
Mathivanan AshokkumarUnit of Microbiology and Immunology, ICMR-Vector Control Research Centre (ICMR-VCRC), Indira Nagar, Puducherry, India.
Amala RamasamyUnit of Biostatistics and VBD Modeling, ICMR-Vector Control Research Centre (ICMR-VCRC), Indira Nagar, Puducherry, India.
Nanda Kumar YellapuUnit of Clinical and Molecular Medicine, ICMR-Vector Control Research Centre (ICMR-VCRC), Indira Nagar, Puducherry, India.
Panneer DevarajuUnit of One Health, ICMR-Vector Control Research Centre (ICMR-VCRC), Indira Nagar, Puducherry, India.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Background: Scrub typhus (ST), is a vector borne zoonotic disease, transmitted by the larva of the trombiculid mites. The enzootic cycle of the pathogen involves rodents/shrews as the animal reservoirs and humans are the accidental dead-end host. A transposon-like activity in its major antigen 56 kDa, has led to the evolution of several serotypes/strains, and more than 40 serotypes are reported globally. Puducherry, India, is endemic to scrub, but limited data exist on local serotype distribution across hosts and vectors. Methodology: A longitudinal molecular surveillance was conducted in Puducherry to investigate the genetic diversity of Result: ST infection was detected in 4.37% (95% CI: 3.05-5.71%) of human, 11.52% (95% CI: 8.6-14.4%) of rodent/shrew, and 2.36% (95% CI: 0.95-4.87%) of mite samples. Karp-like (51.72%) and Gilliam-like (41.38%) strains were predominant in both humans and animal hosts, with pairwise genetic distance (<0.1) and amino acid identity (>85%) analysis revealing a close relationship between the strains identified across the region. Notably, the only mite pool that tested positive for the 56 kDa gene, along with a shrew, was identified to belong to the TA678-like serotype (6.90%), which has not been previously reported from Puducherry. Conclusion: This study provides molecular evidence of the enzootic maintenance and active human transmission of

Indexed as

genetic heterogeneitymolecular diagnosticsphylogenetic analysisscrub typhusTA678-like strain

Identifiers

PMID40950599
PMCPMC12425938

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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.