This study cpmpared the efficiency of Kato-Katz thick smear and thick smear techniques for the diagnosis of intestinal helminths. The sensitivity of the thick smear technique was higher than that of the Kato-Katz method for the diagnosis of all helminths except Schistosoma mansoni.
Neves Santos, F. L., Lima Cerqueira, E. J., & Matos Soares, N. (2005). Comparison of the thick smear and Kato-Katz techniques for diagnosis of intestinal helminth infections. Revista Da Sociedade Brasileira de Medicina Tropical, 38(2), 196–198. https://doi.org/10.1590/s0037-86822005000200016