Eating undercooked meat can lead to food-borne disease via helminthic infection. What is the common host for Taenia saginata?

A. Louis Pasteur: Louis Pasteur made significant contributions to microbiology and germ theory, including the development of pasteurization and vaccines, but he did not specifically establish hygiene standards in healthcare settings.

B. Robert Koch: Robert Koch is known for identifying the causative agents of diseases such as tuberculosis and anthrax and developing Koch’s postulates, but he focused on microbiology research rather than hygiene practices in hospitals.

C. Rudolf Virchow: Rudolf Virchow contributed to cellular pathology and emphasized the importance of social and environmental factors in disease, but he did not establish hygiene standards in clinical care.

D. Florence Nightingale: Florence Nightingale is credited with establishing hygiene standards in healthcare settings through her work during the Crimean War, emphasizing sanitation, clean water, and proper ventilation to reduce infection rates and improve patient outcomes.

A. cell culture: Viruses can be grown in cell cultures, where living host cells provide the machinery necessary for viral replication. This is a common laboratory method.

B. nutrient media: Viruses cannot grow on nutrient media alone because they require living host cells for replication. Nutrient media supports bacterial and fungal growth, not viruses.

C. lab animals: Some viruses require whole organisms for propagation, so laboratory animals can be used as hosts to study pathogenesis and replication.

D. embryonated eggs: Embryonated chicken eggs provide a supportive environment for viral growth and are widely used for vaccine production, such as influenza vaccines.