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28-09-2016
Health

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JoAnn has a cold. She is coughing up mucus (a respiratory secretion) from her lungs. JoAnn is the in the chain of transmission. The mucus from her cough is the in the chain of transmission. NextReset

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Fow28M19 Fow28M19

20-03-2019

JoAnn is the RESERVIOR in the chain of the transmission. The mucus from her cough is the PORTAL OF EXIT in the chain of transmission.

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