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Gynaecology & Obstetrics
Viremia and the presence of rubella virus in the throat of infect persons bear which of the following relationships to the onset of the rube rash?
They precede the rash by 5 to 7 days
They precede the rash by 1 to 2 days
They occur coincidentally with the rash
They occur 1 to 2 days after the rash
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