Report links 1,600 deaths to pesticide poisoning

A farmer sprays weeds with herbicide. PHOTO/MICHEAL J SSALI

A total of 1,599 deaths between 2017 and 2022 were linked to organophosphate (pesticide) poisoning, researchers from Uganda National Institute of Public Health (UNIPH) and the Health ministry found.

This information is in one of the reports presented yesterday during the 9th National Field Epidemiology Conference in Kampala. The study led by Mr Robert Zavuga was based on the data from the District Health Information System (of the Health ministry), which is received from health facilities across the country.

“A total of 37,883 (average of 6,314 per year) organophosphate (OP) [health facility] admissions and 1,599 (average of 267 per year) deaths were reported,” the report reads.

OP admission was defined by researchers as a hospital stay due to suspected OP poisoning. In contrast, OP poisoning death was defined as inpatient death with OP poisoning listed as the cause of death.

The researchers linked the poisoning to the widespread use of OP pesticides by farmers in the country amid limited knowledge of how to use the pesticides safely. 

“Uganda has an agricultural-based economy with widespread use of organophosphate-based pesticides. This elevates the risk for OP poisoning in the population,” the report reads further.

According to the report, the overall average incidence was 15 organophosphate admissions per 100,000 persons.

On areas, sex and age that are most affected, the report indicates, “residents of Ankole Sub-region were more affected while those in Lango Sub-region were least affected.”

“Males had a higher incidence of organophosphate poisoning than females. Children under 5 years had a higher incidence than persons above 5 years (20 vs 14/100,000),” the report said. 

Overall, 1,599 (average of 267 per year) deaths were reported between 2017 and 2022. Residents in Kampala had the highest overall case fatality rate (CFR) while those in Teso had the lowest (CFR: 8.5 percent vs 2.2 percent),” the report reads.

According to the report released yesterday, “there was more than 3-fold decline in incidence of OP poisoning admissions per 100,000 population from 2017-2022,” however, the researchers noted, “there was no significant change in the case fatality rate of organophosphate poisoning.”

“The incidence of organophosphate poisoning admissions declined throughout the study period. Since 2014, Uganda has implemented periodic public awareness campaigns about safe use of pesticides for small-holder farmers and pesticide dealers,”  the report says.

“These campaigns have included sensitisation about responsible handling to reduce risk of poisoning and environmental pollution. Additional campaigns targeting government pesticide regulators, non-governmental organisations, and media have also been implemented to address the dangers of organophosphate poisoning,” it adds.

The report says Uganda has also implemented the Agricultural Chemical Control Act to use less toxic pesticides, which may be contributing to the reduction in organophosphate poisonings. 

“To continue this decline, it is important to monitor and strengthen these interventions,” the researchers from UNIPH and Health ministry recommended.