Evidence map›Paper›PMID 34890118›Full record

ArticleTransboundary and emerging diseases2022

Safety study of Rift Valley Fever human vaccine candidate (DDVax) in mosquitoes.

Corey L Campbell, Trey K Snell, Susi Bennett, John H Wyckoff, Darragh Heaslip, Jordan Flatt, Emma K Harris, Daniel A Hartman, Elena Lian, Brian H Bird and 3 more

Open access · hybridAbstract read
In one paragraph

Article in Transboundary and emerging diseases, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers.

0numbers the graph read from it
0cells of the map it votes in
20citing papers in PubMed
0.8field-weighted citation impact, top 24% 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

20 citing papers in PubMed, 18 citations in OpenAlex.

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  9. Co-Infection ofViruses · 2025
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  10. Review
  11. Review
  12. Review
  13. Viruses · 2023
    Article
  14. Rift Valley Fever Virus Primes Immune Responses inPathogens (Basel, Switzerland) · 2023
    Article
  15. Review
  16. Review
  17. Replication Kinetics of a Candidate Live-Attenuated Vaccine for Cache Valley Virus inVector borne and zoonotic diseases (Larchmont, N.Y.) · 2022
    Article
  18. Review
  19. Article
  20. 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

13 authors at 2 institutions in 1 country.

Corey L CampbellDepartment of Microbiology, Immunology, and Pathology, Center for Vector-Borne Infectious Diseases, Colorado State University, Fort Collins, Colorado.ORCID https://orcid.org/0000-0002-6384-1259
Trey K SnellDepartment of Microbiology, Immunology, and Pathology, Center for Vector-Borne Infectious Diseases, Colorado State University, Fort Collins, Colorado.
Susi BennettDepartment of Microbiology, Immunology, and Pathology, Center for Vector-Borne Infectious Diseases, Colorado State University, Fort Collins, Colorado.
John H WyckoffBioMARC, Infectious Diseases Research Center, Colorado State University, Fort Collins, Colorado.
Darragh HeaslipBioMARC, Infectious Diseases Research Center, Colorado State University, Fort Collins, Colorado.
Jordan FlattBioMARC, Infectious Diseases Research Center, Colorado State University, Fort Collins, Colorado.
Emma K HarrisDepartment of Microbiology, Immunology, and Pathology, Center for Vector-Borne Infectious Diseases, Colorado State University, Fort Collins, Colorado.
Daniel A HartmanDepartment of Microbiology, Immunology, and Pathology, Center for Vector-Borne Infectious Diseases, Colorado State University, Fort Collins, Colorado.
Elena LianDepartment of Microbiology, Immunology, and Pathology, Center for Vector-Borne Infectious Diseases, Colorado State University, Fort Collins, Colorado.
Brian H BirdSchool of Veterinary Medicine, One Health Institute, University of California, Davis, California.
Mark D StengleinDepartment of Microbiology, Immunology, and Pathology, Center for Vector-Borne Infectious Diseases, Colorado State University, Fort Collins, Colorado.
Richard A BowenDepartment of Microbiology, Immunology, and Pathology, Center for Vector-Borne Infectious Diseases, Colorado State University, Fort Collins, Colorado.
Rebekah C KadingDepartment of Microbiology, Immunology, and Pathology, Center for Vector-Borne Infectious Diseases, Colorado State University, Fort Collins, Colorado.
Colorado State University · USUniversity of California, Davis · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Rift Valley fever virus (RVFV) is a mosquito-borne pathogen with significant human and veterinary health consequences that periodically emerges in epizootics. RVFV causes fetal loss and death in ruminants and in humans can lead to liver and renal disease, delayed-onset encephalitis, retinitis, and in some cases severe haemorrhagic fever. A live attenuated vaccine candidate (DDVax), was developed by the deletion of the virulence factors NSs and NSm from a clinical isolate, ZH501, and has proven safe and immunogenic in rodents, pregnant sheep and non-human primates. Deletion of NSm also severely restricted mosquito midgut infection and inhibited vector-borne transmission. To demonstrate environmental safety, this study investigated the replication, dissemination and transmission efficiency of DDVax in mosquitoes following oral exposure compared to RVFV strains MP-12 and ZH501. Infection and dissemination profiles were also measured in mosquitoes 7 days after they fed on goats inoculated with DDvax or MP-12. We hypothesized that DDVax would infect mosquitoes at significantly lower rates than other RVFV strains and, due to lack of NSm, be transmission incompetent. Exposure of Ae. aegypti and Cx. tarsalis to 8 log

Indexed as

AedesRift Valley FeverRift Valley fever virusVaccines, AttenuatedAnimalsGoat DiseasesGoatsHumansMosquito VectorsSheepSheep DiseasesVirulence FactorsVaccines, AttenuatedVirulence FactorsAedesarbovirusCulexvaccinevector-borne diseasevector competence

Identifiers

PMID34890118
PMCPMC9788258
OpenAlexW4200500681

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.