Question

1. how did knowing the cause of the bubonic plague affect how its spread was managed? 2

Explanation:

The bubonic plague is caused by the bacterium Yersinia pestis, typically transmitted by fleas on rats. Once the cause (pathogen, vector) was identified:

1. Vector control: Efforts focused on reducing rat populations (e.g., sanitation, extermination) to limit flea hosts, cutting transmission.
2. Personal protection: Healthcare workers and those in affected areas used measures like flea-repellent clothing, avoiding infected animals, and practicing hygiene to reduce exposure to fleas or infected bodily fluids.
3. Medical interventions: Antibiotics (once developed) targeting Y. pestis became a key management tool, treating infected individuals to stop them from spreading the disease.
4. Quarantine and isolation: Understanding the transmission (via fleas, respiratory droplets in pneumonic plague) allowed isolating infected people/areas to contain spread, rather than relying on ineffective historical methods (e.g., blaming "miasmas").

These strategies were informed by knowing the cause, shifting management from superstition to science-based actions.

Answer:

Knowing the bubonic plague is caused by Yersinia pestis (transmitted by fleas on rats, or via respiratory droplets in pneumonic form) allowed science - based management:

1. Vector control: Reducing rat populations (sanitation, extermination) to limit flea hosts.
2. Medical treatment: Using antibiotics (e.g., streptomycin) to cure infected individuals, reducing spread.
3. Quarantine/isolation: Separating infected people/areas to stop transmission, replacing ineffective historical methods.
4. Personal protection: Using flea - repellent, avoiding infected animals, and practicing hygiene to reduce exposure.

(Any 2 relevant points, e.g., vector control and medical treatment, would suffice for a [2] - mark answer.)