Which Parasites Have A Direct Life Cycle?

Which Parasites Have A Direct Life Cycle? Nematodes, trypanosomatids, and Cryptosporidium are examples of parasites with direct life cycles. Does Plasmodium have a direct life cycle? The Plasmodium life cycle involves two hosts: 1) a vertebrate host in which parasites reproduce asexually, begin sexual development, and cause the disease malaria, and 2) an invertebrate host