Evidence map›Paper›PMID 27448606›Full record

ArticleMalaria journal2016

Anti-malarial seroprevalence assessment during an elimination programme in Chabahar District, south-eastern Iran.

Sedigheh Zakeri, Lotus Leonie van den Hoogen, Akram Abouie Mehrizi, Fatemh Karimi, Ahmad Raeisi, Chris Drakeley

Open access · goldAbstract read
In one paragraph

Article in Malaria journal, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers.

0numbers the graph read from it
0cells of the map it votes in
9citing papers in PubMed
0.9field-weighted citation impact, top 19% 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

9 citing papers in PubMed, 9 citations in OpenAlex.

  1. Article
  2. Serology reveals comparable patterns in the transmission intensities ofFrontiers in cellular and infection microbiology · 2025
    Article
  3. Using Serological Markers for the Surveillance ofPathogens (Basel, Switzerland) · 2023
    Article
  4. Naturally acquired antibody response toFrontiers in cellular and infection microbiology · 2023
    Article
  5. Article
  6. Article
  7. Article
  8. Review
  9. 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

6 authors at 4 institutions in 2 countries.

Sedigheh ZakeriMalaria and Vector Research Group (MVRG), Biotechnology Research Center (BCR), Pasteur Institute, P.O. Box: 1316943551, Tehran, Iran. zakeris@yahoo.com.
Lotus Leonie van den HoogenDepartment of Immunology and Infection, London School of Hygiene & Tropical Medicine, London, UK.
Akram Abouie MehriziMalaria and Vector Research Group (MVRG), Biotechnology Research Center (BCR), Pasteur Institute, P.O. Box: 1316943551, Tehran, Iran.
Fatemh KarimiMalaria and Vector Research Group (MVRG), Biotechnology Research Center (BCR), Pasteur Institute, P.O. Box: 1316943551, Tehran, Iran.
Ahmad RaeisiNational Programme Manager for Malaria Control, Ministry of Health and Medical Education, Tehran, Iran.
Chris DrakeleyDepartment of Immunology and Infection, London School of Hygiene & Tropical Medicine, London, UK. Chris.Drakeley@lshtm.ac.uk.
London School of Hygiene & Tropical Medicine · GBPasteur Institute of Iran · IRBiotechnology Research Center · IRMinistry of Health and Medical Education · IR

Funding

Wellcome TrustWellcome Trust 091924
6 · The paper itself

Abstract

backgroundIran has achieved a substantial decline in malaria incidence over the past decades. A common feature of malaria-endemic settings is the requirement for more sensitive techniques to describe levels of low transmission. In this study, serological and parasitological methods were used to measure transmission levels of Plasmodium falciparum and Plasmodium vivax during an elimination programme (2012) in Chabahar District, Sistan and Baluchistan Province, south-eastern Iran.

methodsParticipants were randomly selected from 64 different geographical clusters in Chabahar city and surrounding villages. Antibody responses to P. falciparum and P. vivax blood-stage antigens were assessed by ELISA, while microscopy and molecular testing were used to determine parasite carriage by species. Age-adjusted antibody responses were analysed using a reversible catalytic model to calculate seroconversion rates (SCR).

resultsThere was no evidence of recent transmission in the study areas, indicated by an absence of parasite infections in all ages and low or absent serological responses to either species in young children. The best model for age P. falciparum seroconversion was one with a change in exposure 21 years before sampling was done in Chabahar city (P = 0.018) and 4 years in the villages (P = 0.039). There was a higher level of recent P. vivax transmission compared to P. falciparum, based on the SCRs, in both the city and village settings.

conclusionSerological analysis identified a decline in P. falciparum transmission in the urban areas of Chabahar, consistent with a previously described decrease in malaria in the early 1990s, demonstrating the utility of this approach to reconstruct exposure history. At present, it remains unclear whether the P. vivax antibody responses reflect active transmission due to new infections or relapse infections. The absence of parasitological and serological evidence of recent malaria transmission in Chabahar District is viable evidence for certification of elimination.

Indexed as

AdolescentAdultAgedAntibodies, ProtozoanChildChild, PreschoolCross-Sectional StudiesDisease EradicationDNA, ProtozoanEnzyme-Linked Immunosorbent AssayFemaleHumansIranMalaria, FalciparumMalaria, VivaxMaleAntibodies, ProtozoanDNA, Protozoan

Identifiers

PMID27448606
PMCPMC4957887
OpenAlexW2484169635

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.