According to the CDC today, 371 of 3,035 passengers and 32 of 1,161 crew have been sickened, 12,2 percent and 2.8 percent, respectively.
Officials say the causative agent remains unknown to date.
Norovirus is a highly contagious viral illness that often goes by other names, such as viral gastroenteritis, stomach flu, and food poisoning.
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