ArticleMicrobial ecology2006
Fate of Cryptosporidium oocysts and Giardia cysts in the Norwegian aquatic environment over winter.
Article in Microbial ecology, 2006. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.
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.
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.
Who cites it
7 citing papers in PubMed.
- Zoonotic enteric parasites in Mongolian people, animals, and the environment: Using One Health to address shared pathogens.PLoS neglected tropical diseases · 2021Article
- Parasite contamination of berries: Risk, occurrence, and approaches for mitigation.Food and waterborne parasitology · 2018Review
- Herd factors influencing oocyst production of Eimeria and Cryptosporidium in Estonian dairy cattle.Parasitology research · 2009Article
- Evaluation of the effect of temperature on the die-off rate for Cryptosporidium parvum oocysts in water, soils, and feces.Applied and environmental microbiology · 2008Review
- Environmental inactivation of Cryptosporidium parvum oocysts in waste stabilization ponds.Microbial ecology · 2008Article
- A longitudinal study on the occurrence of Cryptosporidium and Giardia in dogs during their first year of life.Acta veterinaria Scandinavica · 2007Article
- Occurrence of Cryptosporidium oocysts and Giardia cysts in sewage in Norway.Applied and environmental microbiology · 2006Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
2 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
We investigated the survival of Cryptosporidium oocysts and Giardia cysts during winter in an aquatic environment (approximate temperature measurements between 1 and 7 degrees C) in Norway, using morphology and uptake of dyes as indicators of viability. Previous research has shown that in the terrestrial environment, shear forces caused by freeze and thaw cycles probably cause the parasites to be inactivated. Such forces occurred infrequently in the aquatic environment, as freezing of the water around the parasites was not observed during the study period (although freezing of the water surface did occur). The rate of decline in viability (log(10) N (t)/N (0)) was similar in control and experimental environments for both parasites; no Cryptosporidium oocysts with viable morphology were detected after approximately 20 weeks and no Giardia cysts with apparently viable morphology could be detected after 1 month. These results suggest that infection with these parasites in Norway is not usually from transmission stages that have over-wintered in the Norwegian environment.
Indexed as
Identifiers
17082998What OpenQuestion holds
Registered trials
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.