Community-based surveillance of Cryptosporidium in the indigenous community of Boliwong, Philippines: from April to December 2017
- Author:
Ryan V LABANA
1
;
Julieta Z DUNGCA
;
Veeranoot NISSAPATORN
Author Information
- Publication Type:Original Article
- Keywords: Cryptosporidium; Epidemiology; Indigenous peoples; Protozoan; Public health; Zoonosis
- MeSH: Animals; Cryptosporidium; Disease Outbreaks; Dogs; Drinking Water; Epidemiology; Health Education; Humans; Hygiene; Immunomagnetic Separation; Natural Springs; Odds Ratio; Oocysts; Philippines; Prevalence; Public Health; Risk Factors; Rivers; Sanitation; Toilet Facilities; Water
- From:Epidemiology and Health 2018;40(1):2018047-
- CountryRepublic of Korea
- Language:English
- Abstract: OBJECTIVES: For the first time, Boliwong, an indigenous community in the Philippines, was surveyed for the prevalence of Cryptosporidium from April to December 2017.METHODS: Cryptosporidium oocysts were detected in samples from the river, creek, and water pumps via immunomagnetic separation techniques, and from human and animal concentrated faecal samples using the modified Ziehl-Neelsen technique.RESULTS: Seven of the 24 water samples (29.2%) were positive for Cryptosporidium, with the highest concentration (0.8 oocyst/L) detected in the creek. Of 35 fecal samples from different animal groups, 8 (21.6%) were positive for Cryptosporidium oocysts. The highest intensity of oocyst shedding was detected in dogs (χ2=8.00). Of the 137 human fecal samples, 39 (28.5%) were infected with Cryptosporidium. In this study, 3 risk factors were found to be associated with infection: (1) location (crude odds ratio [cOR], 16.39; 95% confidence interval [CI], 2.11 to 127.41; p=0.008), (2) drinking water from the natural spring (cOR, 0.29; 95% CI, 0.11 to 0.82; p<0.05), and (3) using an open pit as a sanitary toilet facility (cOR, 2.44; 95% CI, 1.14 to 5.20; p<0.05). When the cOR was adjusted, using an open pit as a sanitary toilet facility remained a significant risk factor of infection (adjusted OR, 0.41; 95% CI, 0.19 to 0.90; p<0.05).CONCLUSIONS: There is a potentially emerging Cryptosporidium zoonosis in Boliwong, Lagawe, Philippines. It is recommended that the toilet facilities and the water system in the community be rehabilitated to avoid any possible disease outbreak. Health education is also needed in the community to maintain proper hygiene and sanitation practices.
