Evidence map›Paper›PMID 33314578›Full record

ArticlePest management science2021

An evaluation of Bacillus thuringiensis israelensis (AM65-52) treatment for the control of Aedes aegypti using vehicle-mounted WALS® application in a densely populated urban area of Puerto Rico.

Angela F Harris, Jose Sanchez Prats, Nicole Nazario Maldonado, Cesar Piovanetti Fiol, Marla García Pérez, Patricia Ramírez-Vera, Julieanne Miranda-Bermúdez, Marianyoly Ortiz, Peter DeChant

Abstract read
In one paragraph

Article in Pest management science, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
8citing papers in PubMed, 1 pooled it
–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

8 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
  2. Strategies for controllingCaribbean journal of science · 2026
    Article
  3. Review
  4. Article
  5. Article
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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

9 authors.

Angela F HarrisDivision of Vector-Borne Diseases, Dengue Branch, Centers for Disease Control and Prevention, San Juan, Puerto Rico.ORCID https://orcid.org/0000-0003-0799-7790
Jose Sanchez PratsThe Puerto Rico Vector Control Unit, The Puerto Rico Science Technology and Research Trust, San Juan, Puerto Rico.
Nicole Nazario MaldonadoThe Puerto Rico Vector Control Unit, The Puerto Rico Science Technology and Research Trust, San Juan, Puerto Rico.
Cesar Piovanetti FiolThe Puerto Rico Vector Control Unit, The Puerto Rico Science Technology and Research Trust, San Juan, Puerto Rico.
Marla García PérezThe Puerto Rico Vector Control Unit, The Puerto Rico Science Technology and Research Trust, San Juan, Puerto Rico.
Patricia Ramírez-VeraThe Puerto Rico Vector Control Unit, The Puerto Rico Science Technology and Research Trust, San Juan, Puerto Rico.
Julieanne Miranda-BermúdezThe Puerto Rico Vector Control Unit, The Puerto Rico Science Technology and Research Trust, San Juan, Puerto Rico.
Marianyoly OrtizThe Puerto Rico Vector Control Unit, The Puerto Rico Science Technology and Research Trust, San Juan, Puerto Rico.
Peter DeChantDeChant Vector Solutions LLC, Columbia City, OR, USA.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundWith a shortage of effective options for control of Aedes aegypti in Puerto Rico due to widespread resistance to conventional mosquito adulticides, an alternative approach was investigated to reduce vector populations. In two areas (totaling 144 ha) of the municipality of Bayamón, Puerto Rico, Bacillus thuringiensis israelensis (Bti) AM65-52 WDG was applied at a rate of 500 g/ha using vehicle-mounted aqueous wide-area larvicide spray applications weekly for 4 weeks and then every other week for a further 16 weeks. Bioassay jars were placed in the field to monitor for deposition of Bti droplets in open spaces, and under vegetation and building coverage. Autocidal gravid ovitraps were placed throughout the field site to monitor the population of adult female Ae. aegypti in both treatment and control sites.

resultsLarvicide spray was successfully deposited into jars in an array of open and covered locations, as confirmed by larval bioassays. After the fourth weekly spraying, differences in autocidal gravid ovitrap densities were observed between treatment and control sites resulting in 62% (P = 0.0001) and 28% (P < 0.0001) reductions in adult female Ae. aegypti numbers.

conclusionRepeated wide-area larvicide spray application of Bti AM65-52 WDG to residential areas in Puerto Rico effectively suppressed dengue vector populations. The success of this trial has led to expansion of the WALS® program to a larger area of Bayamón and other municipalities in Puerto Rico. © 2020 Society of Chemical Industry.

Indexed as

AedesBacillus thuringiensisAnimalsFemaleLarvaMosquito ControlMosquito VectorsPuerto RicoAedes aegyptiBacillus thuringiensis israelensis AM65-52 WDGcontainer mosquitodengue vector controllarvicidingWALS®

Identifiers

PMID33314578
PMCPMC8048509

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
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.