<i>Leishmania</i> Lifecycle (IMAGE) Georgia Institute of Technology Caption The life cycle of Leishmania parasites in flies and humans. If passes through promastigote and amastigote phases as it spreads. Credit Centers for Disease Control and Prevention / press and educational handout Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.