Senna is an FDA-approved nonprescription drug. 1  For constipation in adults and children age 12 and over: the usual dose is 17.2 mg daily. Don't take more than 34.4 mg per day.  For constipation in children: 8.5 mg daily increased just enough to cause one bowel movement daily has been used.
Report Abuse. Norovirus lives for WEEKS on surfaces. People are contagious for 2 weeks after all symptoms are gone. People should stay home for 48 hours after all symptoms are gone as well to help prevent the spread of this hightly contagious virus.eport Abuse. Norovirus lives for WEEKS on surfaces. People are contagious for 2 weeks after all symptoms are gone. People should stay home for 48 hours after all symptoms are gone as well to help prevent the spread of this hightly contagious virus.
Murine norovirus (MNV) is a species of norovirus affecting mice. It was first identified in 2003. Like other members of the Caliciviridae family, MNV has an RNA genome. The 3'UTR of the viral genome forms stem-loop structures which have a role in virulence.urine norovirus (MNV) is a species of norovirus affecting mice. It was first identified in 2003. Like other members of the Caliciviridae family, MNV has an RNA genome. The 3'UTR of the viral genome forms stem-loop structures which have a role in virulence.