Related Experiment Videos
The epidemiology and prevention of paraquat poisoning
Insights
Paraquat poisoning deaths in the UK have remained stable since 1975, with most fatalities linked to suicide. Accidental poisonings are rare, and preventative measures need better assessment.
Area of Science:
- Toxicology
- Public Health
- Epidemiology
Background:
- Paraquat poisoning trends in the UK showed an increase from 1966-1975, followed by a plateau.
- High mortality rates are predominantly associated with suicidal intent, while serious accidental paraquat poisoning is infrequent.
- No deaths from paraquat poisoning in children have been reported in the UK since 1977.
Purpose of the Study:
- To analyze trends and characteristics of paraquat poisoning in the UK.
- To review international data and identify gaps in morbidity and prevention studies.
- To inform the development of effective, evidence-based preventative strategies.
Main Methods:
- Analysis of data from the National Poisons Information Service (1980-present) for paraquat poisoning cases.
- Review of available international data and reports from Poison Control Centres.
- Assessment of existing preventative measures and their effectiveness.
Main Results:
- Between 1980 and the time of the study, 1074 cases of paraquat poisoning were recorded, resulting in 209 deaths.
- Recent trends indicate that concentrated paraquat products are more commonly ingested by males, leading to serious poisoning.
- Local exposure to paraquat has not caused systemic poisoning; international data is limited and lacks standardized recording methods.
Conclusions:
- Paraquat poisoning remains a significant concern, primarily due to its association with suicide.
- Current preventative measures are unlikely to significantly reduce annual deaths due to the inherent suicidal nature of paraquat poisoning.
- Future prevention strategies must be tailored to national contexts and rigorously evaluated through epidemiological studies.
Abstract:
In the UK there was an increase in the annual number of deaths associated with paraquat poisoning between 1966 and 1975. Since that time there has been little change in numbers. High mortality is associated commonly with suicidal intent. Serious accidental poisoning from paraquat has never been frequent in the UK and there have been no deaths reported in children since 1977. The National Poisons Information Service has monitored in detail all reports of paraquat poisoning since 1980. Of the 1074 cases recorded there were 209 deaths. In recent years serious poisoning has been more commonly associated with ingestion of concentrated products by males. Local exposure to paraquat has not resulted in systemic poisoning. International data for paraquat poisoning is incomplete and difficult to compare. There is a scarcity of morbidity data at both international and national levels. Information obtained from Poison Control Centres indicates that paraquat poisoning occurs in many countries but detailed comparisons are hindered by lack of standardised methods of recording. Various measures to prevent paraquat poisoning have been introduced. Their effectiveness has not been studied in detail. Some support is provided by the low incidence of serious accidental paraquat poisoning in the UK, but because of the suicidal nature of paraquat poisoning it is unlikely that current preventative measures will influence the number of deaths occurring each year. Preventative measures against paraquat poisoning should be tailored to national needs, based on and assessed by epidemiological studies.