Answer:
Frequent washing of hands, cleaning and patching up of cuts, not sharing eating or cleaning utensils with other people, not touching open cuts or face with uncleaned hands or items, list could go on and on.
If there are specific answers you are to choose from then those would need to have been provided, furthermore a more specific question is recommended because there are a loooot of answer to this question.
Sorry if this didn't help much :)
Step-by-step explanation: