Annika Jungklaus developed a dual-strain LCT SECIR epidemiological model for the SciCompMod/memilio repository, enabling simultaneous simulation of two interacting diseases within a unified framework. She implemented compartmental logic in C++ to represent each strain and their interactions, expanding the model’s forecasting and scenario analysis capabilities. Annika incorporated automated software tests to validate the two-strain dynamics, ensuring model reliability and readiness for future extensions. Her work involved close collaboration with other contributors, as reflected in co-authored commits. This contribution deepened the epidemiological modeling toolkit, demonstrating strong skills in C++ development, epidemiological modeling, and rigorous software testing practices.