There are two important processes that play a significant role in parasitism, infections and intoxications. 1. Infection: Infection refers to entry of a pathogen into host tissues after transmission, and its growth and reproduction resulting in disease. The events of infection are as below: (i) Attachment and Colonization by the Pathogen: The host contains its own normal microbial flora. A [...]
In this article we will discuss about the life cycle of trypanosoma gambiense. Trypanosoma gambiense is digenetic; i.e., it completes its life cycle in two hosts. The primary or definitive host is man. The mammals, like pigs, buffaloes, antelopes often act as reservoir hosts harbouring the parasite. The intermediate host is blood sucking insect called tsetse fly (Glossina palpalis). Life [...]
A comparison of the course of natural infection of P.vivax and P. falciparum in man: Comparison # P. Vivax: 1. Pre-erythrocytic schizogony: It consists of one cycle, lasts 7-8 days. Number of merozoites produced by each schizont is about 12,000. 2. Erythrocytic schizogony: Duration of erythrocytic schizogony is about 48 hours. Appearance of parasites in the peripheral blood on 12th [...]