Waterborne parasites: a current status from the Philippines

Area of Science:

• Environmental Microbiology
• Parasitology
• Public Health

Background:

• Waterborne diseases remain a critical threat, particularly in developing nations.
• Limited data on waterborne parasites exacerbates the problem of unsafe water consumption.
• This study addresses the knowledge gap by investigating parasitic contamination in the Philippines.

Purpose of the Study:

• To determine the prevalence of key waterborne parasites in various water sources in the Philippines.
• To raise awareness about parasitic contamination in the local aquatic environment.
• To provide data for policymakers on water pollution as a public health issue.

Main Methods:

• Collected 33 water samples (12 liters each) from diverse sources.
• Used immunomagnetic separation and fluorescence microscopy for Cryptosporidium and Giardia detection.
• Employed microscopy and PCR for Acanthamoeba and Naegleria identification.

Main Results:

• Prevalence rates: Cryptosporidium (36.4%), Giardia (45.5%), Acanthamoeba (33.3%), Naegleria (18.2%).
• Parasites detected in rivers, lakes, ponds, swimming pools, and tap water.
• Significant correlations found between Giardia and nitrite/nitrate levels.

Conclusions:

• Parasitic contamination is widespread across various water bodies in the Philippines.
• Findings underscore the public health implications of water pollution in the region.
• The study serves as a crucial baseline for future water quality interventions and policy development.