Its too expensive or they feel they don't need it because they don't get sick or hurt or don't go to the doctor
I don't fully understand your question but what i assume you are trying to ask is WHY her mucus is part of the chain of transmission.
JoAnn's mucus still contains active cultures of the cold virus that is affecting JoAnn. thus her mucus would be able to transmit the virus to others.
Answer:true
Explanation: most of the time you can find all of the states whether