Snakebites, a neglected public health concern: an analysis of distribution, trends and incidence of snakebite cases reported to health facilities in the Volta Region of Ghana, 2018-2023.

Abstract

Background: Snakebite affects 5.4 million people annually, causing up to 2.7 million envenoming cases and 137 880 deaths. Its rise has been linked to flooding. This study examines the distribution, trends and incidence of snakebite cases in the Volta Region and identifies snakebite outbreaks in flood-affected districts.

Methods: We undertook a descriptive secondary data analysis of 2018-2023 snakebite cases from the District Health Information and Management Systems II database for the Volta Region. Cumulative Sum was used to identify missed outbreaks. The results are presented in tables, graphs and maps.

Results: A total of 1637 snakebite cases were reported across the 6-y study period, with an overall incidence rate of 15.8 cases per 100 000 population and a case fatality rate of 0.4% (7/1637). Case patients aged 20-34 y were the most affected (26.7%; 437/1637). Most of the cases peaked in March during the rainy season. The incidence of snakebites decreased from 18 cases per 100 000 population in 2018 to 15.8 cases per 100 000 population in 2023. Each of the flood-affected districts reported snakebite outbreaks before the flooding event. No new outbreaks were detected during or after the floods as of December 2023.

Conclusions: While snakebite incidence has decreased overall in the Volta Region, the burden remains alarmingly high in Ketu North. Young adults are particularly vulnerable. Urgent efforts are needed to enhance education, emphasising the importance of protective attire during the wet season for community safety.