The Relationship between Diarrhea and the Infection of Intestinal Protozoa in Fuzhou District

To survey the relationship between diarrhea and the infection of intestinal protozoa in Fuzhou district. Microscope examination was carried out for fresh feces derived from 3 116 diarrhea patients by the methods of direct smear with saline, Lugol's solution staining smear or modified acid fast staining, respectively. The infection rate of protocoa was 21.66%.Except 63 cases(Entamoeba coli,the pathogenicity hadn't been proved),the rate of pathogenic intestinal protozoa was 19 64%. Among them the highest rate of Entamoeba histolytic was 17 65%, followed by the rate of Cryptosporidium (0 64%), Trichomonas hominis(0 61%), Blastocystis hominis (0 42%) and Giardia lamblia (0 32%). [Conclusion] The diarrhea was mainly caused by pathogenic intestinal protozoa (19 64%) and the most important was Entamoeba histolytica. For the children, the main organisms of diarrhea ware Cryptosporidium, Trichomonas hominis, Blastocystis hominisand and Giardia lamblia.